| 勿論 | もちろん | of course; certainly; naturally | n4 |
| 議論 | ぎろん | argument; discussion; dispute; controversy | n2 |
| 理論 | りろん | theory | n2 |
| 結論 | けつろん | conclusion (of an argument, discussion, study, etc.); conclusion | n2 |
| 無論 | むろん | of course; certainly; naturally | n1 |
| 論 | ろん | argument; discussion; dispute; controversy | n2 |
| 論文 | ろんぶん | thesis; essay; treatise; paper | n3 |
| 論じる | ろんじる | to discuss; to talk about; to deal with (a topic); to argue | n1 |
| 論理 | ろんり | logic | n2 |
| 論ずる | ろんずる | to discuss; to talk about; to deal with (a topic); to argue | |
| 評論 | ひょうろん | criticism; critique; review; comment | n2 |
| 論争 | ろんそう | dispute; controversy; debate; argument | n2 |
| 論議 | ろんぎ | discussion; argument; debate | |
| 口論 | こうろん | quarrel; argument; row; (verbal) dispute | |
| 論語 | ろんご | the Analects of Confucius (one of the Four Books) | |
| 論理的 | ろんりてき | logical | n2 |
| 推論 | すいろん | inference; deduction; induction; reasoning | n1 |
| 言論 | げんろん | (one's) speech; expression of views; discussion | |
| 異論 | いろん | different opinion; objection | |
| 論点 | ろんてん | point in question (at issue) | n2 |
| 中央公論 | ちゅうおうこうろん | Chūōkōron (monthly literary magazine) | |
| 討論 | とうろん | debate; discussion | n2 |
| 一元論 | いちげんろん | monism | |
| 三段論法 | さんだんろんぽう | syllogism | |
| 世論 | よろん | public opinion; popular voice; public sentiment; consensus | n1 |
| 立論 | りつろん | argument(ation) | |
| 輿論 | よろん | public opinion; popular voice; public sentiment; consensus | n1 |
| 論者 | ろんしゃ | advocate; disputant; debater; (present) writer | |
| 評論家 | ひょうろんか | critic; reviewer; commentator | |
| 論法 | ろんぽう | logic; reasoning; argument; line of argument | |
| 公論 | こうろん | public opinion; unbiased criticism; unbiassed criticism | |
| 反論 | はんろん | objection; refutation; rebuttal; counterargument | n2 |
| 空論 | くうろん | abstract or impracticable theory | n1 |
| 論証 | ろんしょう | proof; certain truth; demonstration; argumentation | n1 |
| 論拠 | ろんきょ | grounds of an argument | n1 |
| 論説 | ろんせつ | article; discourse; dissertation; (written) argument | n1 |
| 論外 | ろんがい | out of the question; outrageous; impossible; irrelevant | |
| 持論 | じろん | one's cherished opinion; pet theory | n1 |
| 弁論 | べんろん | discussion; debate; argument | n1 |
| 辯論 | べんろん | discussion; debate; argument | n1 |
| 論旨 | ろんし | point of an argument; drift of an argument | n1 |
| 争論 | そうろん | argument; dispute; controversy | |
| 理論的 | りろんてき | theoretical | |
| 概論 | がいろん | introduction; outline; general remarks | n1 |
| 水掛け論 | みずかけろん | endless argument; pointless argument; fruitless dispute; futile discussion | |
| 目論見 | もくろみ | plan; scheme; plot; design | |
| 総論 | そうろん | general remarks | |
| 宿命論 | しゅくめいろん | fatalism | |
| 目論む | もくろむ | to plan; to form a plan; to scheme; to envision | n1 |
| 二元論 | にげんろん | dualism | |
| 小論文 | しょうろんぶん | short essay; pamphlet; tract | |
| 談論 | だんろん | discussion | |
| 論戦 | ろんせん | battle of words; debate; argument; dispute | n2 |
| 本論 | ほんろん | main subject; main issue; main discourse; this subject | |
| 論告 | ろんこく | prosecutor's closing argument | |
| 集合論 | しゅうごうろん | set theory | |
| 論述 | ろんじゅつ | statement (of a carefully reasoned logical argument); dissertation; enunciation; setting forth | |
| 正論 | せいろん | sound argument; fair argument; just reasoning | n1 |
| 方法論 | ほうほうろん | methodology | |
| 論評 | ろんぴょう | comment; criticism; critique; review | |
| 論断 | ろんだん | conclusion; verdict | |
| 激論 | げきろん | heated argument; heated discussion; heated debate | |
| 観念論 | かんねんろん | idealism | |
| 論理学 | ろんりがく | (study of) logic | |
| 傷寒論 | しょうかんろん | Shanghan Lun (treatise on traditional Chinese medicine compiled by Zhang Zhongjing); Treatise on Cold Damage Disorders; Treatise on Cold Injury | |
| 所論 | しょろん | one's opinion | |
| 暗号理論 | あんごうりろん | cryptography; cryptographic theory | |
| 世論調査 | よろんちょうさ | public opinion poll; straw poll | |
| 相対性理論 | そうたいせいりろん | theory of relativity | |
| 論客 | ろんきゃく | controversialist; polemic; disputant | |
| 序論 | じょろん | introduction; preface | |
| 論難 | ろんなん | criticism; censure | |
| 論破 | ろんぱ | defeating an argument; winning an argument; refutation; confutation | |
| 論考 | ろんこう | study (of); discussion; discourse; inquiry | |
| 論題 | ろんだい | subject; theme | |
| 原論 | げんろん | theory; principles | |
| 論判 | ろんぱん | judgement (on whether something is right or wrong); decision; argument; dispute | |
| 論結 | ろんけつ | conclusion (to a discussion or debate) | |
| 理論上 | りろんじょう | theoretically; in theory; theoretical | |
| 論集 | ろんしゅう | collection of essays; collection of treatises; collection of theses | |
| 論究 | ろんきゅう | discuss thoroughly; deal exhaustively with | |
| 詩論 | しろん | essay on poetry; theory of poetry | |
| 論敵 | ろんてき | opponent in a debate or argument | n1 |
| 詳論 | しょうろん | explanation in detail; full discussion | |
| 論及 | ろんきゅう | mention; reference to; touching upon | |
| 論調 | ろんちょう | tone (of argument); tenor; drift | |
| 結論づける | けつろんづける | to reason; to sum up; to conclude | |
| 国論 | こくろん | public opinion | |
| 史論 | しろん | historical treatise; historical discussion | |
| 愚論 | ぐろん | foolish argument or view | |
| 暴論 | ぼうろん | irrational (line of) argument | |
| 進化論 | しんかろん | evolutionary theory; theory of evolution | |
| 論壇 | ろんだん | rostrum; the world of criticism | |
| 水掛論 | みずかけろん | endless argument; pointless argument; fruitless dispute; futile discussion | |
| 俗論 | ぞくろん | popular opinion | |
| 政論 | せいろん | political argument | n1 |
| 汎神論 | はんしんろん | pantheism | |
| 一般相対性理論 | いっぱんそうたいせいりろん | general theory of relativity | |
| 論文集 | ろんぶんしゅう | collected papers; collected works; collection of articles and essays | |
| 理論化学 | りろんかがく | theoretical chemistry | |
| 一般論 | いっぱんろん | prevailing view; common opinion; general consideration | |
| 音楽理論 | おんがくりろん | music theory; musical theory | |
| 討論会 | とうろんかい | debate; panel discussion; forum | |
| 学術論文 | がくじゅつろんぶん | academic paper; scholarly paper; academic article; treatise | |
| 論鋒 | ろんぽう | tone or force of an argument | |
| 論駁 | ろんばく | refutation; confutation | |
| 駁論 | ばくろん | refutation; confutation | |
| 両論 | りょうろん | both arguments; both opinions | |
| 各論 | かくろん | item-by-item discussion; itemized discussion; detailed exposition; detailed discussion | |
| 名論 | めいろん | excellent opinion; sound argument | |
| 宇宙論 | うちゅうろん | cosmology | |
| 空理空論 | くうりくうろん | impractical theory; academic discussion; doctrinairism | |
| 卒論 | そつろん | graduation thesis; bachelor's degree thesis | |
| 論叢 | ろんそう | treatise or essay collection | n2 |
| 論功行賞 | ろんこうこうしょう | conferral of honors (honours), according to merits | |
| 試論 | しろん | essay; tentative assumption | |
| 決定論 | けっていろん | determinism | |
| 認識論 | にんしきろん | epistemology | |
| 非戦論 | ひせんろん | anti-war argument; pacifism | |
| 定論 | ていろん | established theory | |
| 論弁 | ろんべん | argument | |
| 歌論 | かろん | essay on tanka poetry | |
| 宗論 | しゅうろん | doctrinal dispute (within or between religious schools) | |
| 論定 | ろんてい | discussing and deciding | |
| 論陣 | ろんじん | (construction of an) argument | |
| 論文誌 | ろんぶんし | (academic) journal | |
| 論策 | ろんさく | (written) treatment of current events | |
| 痛論 | つうろん | vehement argument; severe criticism | |
| 邪論 | じゃろん | heretical doctrine; wicked teaching | |
| 運命論 | うんめいろん | fatalism | |
| ゲーム理論 | ゲームりろん | game theory | |
| 多元論 | たげんろん | pluralism | |
| 確率論 | かくりつろん | probability theory | |
| 賛否両論 | さんぴりょうろん | arguments for and against; pros and cons; mixed reception; mixed reviews | |
| 時論 | じろん | comments on current events; public sentiments of the day; current view; contemporary opinion | n1 |
| 極論 | きょくろん | extreme logic; extreme argument; unreserved argument | |
| 意味論 | いみろん | semantics; the study of meaning | |
| 陰謀論 | いんぼうろん | conspiracy theory | |
| 汎論 | はんろん | general remarks; outline | n2 |
| 細論 | さいろん | detailed discussion; detailed explanation | |
| 通論 | つうろん | outline (of); introduction (to) | |
| 甲論乙駁 | こうろんおつばく | arguments pro and con | |
| 緒論 | しょろん | introduction; preface | |
| 高論 | こうろん | intelligent opinion; your esteemed opinion | |
| 実在論 | じつざいろん | realism (as opposed to idealism); realism (as opposed to nominalism) | |
| 理論家 | りろんか | theorist | |
| 相対論 | そうたいろん | theory of relativity; relativism | |
| 情報理論 | じょうほうりろん | information theory | |
| 水論 | すいろん | water dispute (esp. for rice fields); water conflict | n1 |
| 懐疑論 | かいぎろん | skepticism; scepticism | |
| 量子論 | りょうしろん | quantum theory | |
| 不可知論 | ふかちろん | agnosticism | |
| 整数論 | せいすうろん | number theory | |
| 有神論 | ゆうしんろん | theism | |
| 組織論 | そしきろん | organizational theory; organization theory | |
| 経験論 | けいけんろん | empiricism | |
| 特殊相対性理論 | とくしゅそうたいせいりろん | special theory of relativity | |
| 論決 | ろんけつ | discussing and deciding; conclusion (to a discussion) | |
| 唯物論 | ゆいぶつろん | materialism | |
| 論理和 | ろんりわ | disjunction; logical sum; logical add; OR operation | |
| 命題論理 | めいだいろんり | propositional logic; propositional calculus | |
| 論説委員 | ろんせついいん | editorial writer | |
| 論賛 | ろんさん | comments on those listed in a biography | |
| 存在論 | そんざいろん | ontology | |
| 感情論 | かんじょうろん | argument based on emotion; sentimental argument | |
| 博士論文 | はかせろんぶん | doctoral dissertation; doctoral thesis | |
| 僻論 | へきろん | prejudiced opinion | |
| 群論 | ぐんろん | group theory | |
| 原子論 | げんしろん | atomic theory; atomism; atomic theory | |
| 口頭弁論 | こうとうべんろん | oral proceedings; oral pleadings | |
| 無神論者 | むしんろんしゃ | atheist | |
| 研究論文 | けんきゅうろんぶん | research paper; study; thesis | |
| 衆論 | しゅうろん | public opinion | |
| 精神論 | せいしんろん | spiritualism; idealism | |
| 終末論 | しゅうまつろん | eschatology; doomsday theory; apocalypticism | |
| 修士論文 | しゅうしろんぶん | master's thesis | |
| 学位論文 | がくいろんぶん | thesis; dissertation | |
| 文芸評論家 | ぶんげいひょうろんか | literary critic | |
| 抗論 | こうろん | refutation; repudiation; objection | |
| 私論 | しろん | one's personal opinion or views | |
| 論義 | ろんぎ | discussion; argument; debate | |
| 全体論 | ぜんたいろん | holism; wholism | |
| 社会進化論 | しゃかいしんかろん | social Darwinism | |
| 結論付ける | けつろんづける | to reason; to sum up; to conclude | |
| 圏論 | けんろん | category theory | |
| 論書 | ろんしょ | textbook of Buddhist treatises (containing interpretation of the sutras) | |
| 機械論 | きかいろん | mechanism | |
| 無神論 | むしんろん | atheism | |
| 生気論 | せいきろん | vitalism | |
| 符号理論 | ふごうりろん | coding theory | |
| 論理演算 | ろんりえんざん | logic operation; logical operation | |
| 一般相対論 | いっぱんそうたいろん | general theory of relativity | |
| 定言的三段論法 | ていげんてきさんだんろんぽう | categorical syllogism | |
| 数論 | すうろん | number theory; Samkhya (school of Indian philosophy) | |
| 創造論 | そうぞうろん | creationism | |
| 単性論 | たんせいろん | monophysitism (theology) | |
| 反対論 | はんたいろん | opposing argument | |
| 弁証論 | べんしょうろん | apologetics; dialectics | |
| 摂動論 | せつどうろん | perturbation theory | |
| 攘夷論 | じょういろん | principle of excluding foreigners (late Edo period) | |
| 教育論 | きょういくろん | theory of education; view of education | |
| 目的論 | もくてきろん | teleology | |
| 記号論 | きごうろん | semiotics | |
| 理論体系 | りろんたいけい | body of theory | |
| 形式論理学 | けいしきろんりがく | formal logic | |
| 心身二元論 | しんしんにげんろん | mind-body dualism | |
| 対論 | たいろん | arguing face to face | |
| 法論 | ほうろん | doctrinal discussion; jurisprudence | |
| 画論 | がろん | treatise on painting; essay on painting; theory of painting | |
| 軟論 | なんろん | weak argument | |
| 弦理論 | げんりろん | string theory | |
| 楽観論 | らっかんろん | optimism | |
| 語用論 | ごようろん | pragmatics | |
| 類型論 | るいけいろん | typology | |
| 卒業論文 | そつぎょうろんぶん | graduation thesis | |
| 宿命論者 | しゅくめいろんじゃ | fatalist | |
| 科学理論 | かがくりろん | scientific theory | |
| 論じ合う | ろんじあう | to debate; to deliberate; to argue; to contend | |
| 論理回路 | ろんりかいろ | logic device; logic circuit | |
| キリスト論 | キリストろん | Christology | |
| 論文式試験 | ろんぶんしきしけん | essay-type test; essay-based examination | |
| 再論 | さいろん | rediscussion; debating anew | |
| 小論 | しょうろん | short article; short essay; (one's own) article or essay | |
| 熱論 | ねつろん | heated argument; passionate debate | |
| 唯名論 | ゆいめいろん | nominalism | |
| 形態論 | けいたいろん | morphology | |
| 慎重論 | しんちょうろん | cautious theory; conservative theory | |
| 抽象論 | ちゅうしょうろん | an abstract argument | |
| 根性論 | こんじょうろん | belief that where there's a will, there's a way | |
| 理想論 | りそうろん | idealistic theory; unrealistic argument | |
| 理神論 | りしんろん | deism | |
| 理論値 | りろんち | theoretical value | |
| 結果論 | けっかろん | hindsight-based opinion | |
| 統語論 | とうごろん | syntax | |
| 資本論 | しほんろん | Das Kapital (by Karl Marx); Capital: A Critique of Political Economy | |
| 関数論 | かんすうろん | theory of functions | |
| 音韻論 | おんいんろん | phonology | |
| 世論操作 | よろんそうさ | manipulation of public opinion | |
| 決定論的 | けっていろんてき | deterministic | |
| 談論風発 | だんろんふうはつ | spirited discussion | |
| 論理記号 | ろんりきごう | logic symbol | |
| 相論 | そうろん | debate; argument; lawsuit; (legal) dispute | |
| 主戦論 | しゅせんろん | war advocacy; jingoism; bellicose argument | |
| 人生論 | じんせいろん | one's world view; one's view of life; essay on life | |
| 言論界 | げんろんかい | the press; journalism; fourth estate | |
| 論文式 | ろんぶんしき | essay-type (examination, etc.) | |
| 化学量論 | かがくりょうろん | stoichiometry | |
| 机上空論 | きじょうのくうろん | armchair theory; impracticable plan; unworkable idea | |
| 様相論理 | ようそうろんり | modal logic | |
| 目論見書 | もくろみしょ | prospectus; offering memorandum | |
| 素粒子論 | そりゅうしろん | theory of elementary particles | |
| 組合せ論 | くみあわせろん | combinatorics | |
| 進化論者 | しんかろんしゃ | evolutionist | |
| 理論言語学 | りろんげんごがく | theoretical linguistics | |
| 切論 | せつろん | persistent argument | |
| 卓論 | たくろん | sound argument; clever presentation | |
| 新論 | しんろん | new argument; new theory; new thesis; new debate | |
| 曲論 | きょくろん | biased argument; biassed argument; sophistry; specious argument | |
| 補論 | ほろん | addendum | |
| 文学論 | ぶんがくろん | literary criticism or theory | |
| 現象論 | げんしょうろん | phenomenology; phenomenalism | |
| 芸術論 | げいじゅつろん | essay on art | |
| 語彙論 | ごいろん | lexicology | |
| 論理積 | ろんりせき | logical product; AND operation; conjunction; intersection | |
| 政治理論 | せいじりろん | political theory | |
| 普遍論争 | ふへんろんそう | (debate over) the problem of universals | |
| 最終結論 | さいしゅうけつろん | final conclusion; end product | |
| 理論武装 | りろんぶそう | being prepared for a theoretical (ideological) argument; being armed with theoretical backing | |
| 超越論的 | ちょうえつろんてき | transcendental | |
| システム論 | システムろん | systems theory | |
| 映画評論家 | えいがひょうろんか | film critic; movie critic | |
| 音楽評論家 | おんがくひょうろんか | music critic | |
| 科学的実在論 | かがくてきじつざいろん | scientific realism | |
| 三論 | さんろん | Sanron sect (of Buddhism) | |
| 不要論 | ふようろん | argument that something is unnecessary; opposition | |
| 合理論 | ごうりろん | rationalism | |
| 唯心論 | ゆいしんろん | spiritualism; idealism; mentalism | |
| 実体論 | じったいろん | substantialism | |
| 強硬論 | きょうこうろん | hard line | |
| 文章論 | ぶんしょうろん | syntax | |
| 脅威論 | きょういろん | threat theory; view that a state or entity constitutes a threat | |
| 黄禍論 | こうかろん | Yellow Peril (argument); theory that East Asians are a danger to the Western world | |
| イデア論 | イデアろん | theory of ideas; Platonic idealism | |
| 愛着理論 | あいちゃくりろん | attachment theory | |
| 文学理論 | ぶんがくりろん | literary theory | |
| 日本人論 | にほんじんろん | nihonjinron; theories of Japanese cultural or racial uniqueness | |
| 議論百出 | ぎろんひゃくしゅつ | diverse arguments arising in great numbers | |
| 公開討論会 | こうかいとうろんかい | open forum | |
| 数学基礎論 | すうがくきそろん | foundations of mathematics | |
| 特殊相対論 | とくしゅそうたいろん | special theory of relativity | |
| 理論物理学 | りろんぶつりがく | theoretical physics | |
| 美術評論家 | びじゅつひょうろんか | art critic | |
| 論理演算子 | ろんりえんざんし | logical operator | |
| 野球評論家 | やきゅうひょうろんか | baseball commentator | |
| 仮言的三段論法 | かげんてきさんだんろんぽう | hypothetical syllogism | |
| 選言的三段論法 | せんげんてきさんだんろんぽう | disjunctive syllogism | |
| 自論 | じろん | one's cherished opinion; pet theory | n1 |
| 修論 | しゅうろん | masters thesis | |
| 傍論 | ぼうろん | digression; dicta; dictums | |
| 特論 | とくろん | advanced or master's course at university | |
| 至論 | しろん | persuasive argument | |
| 論攷 | ろんこう | study (of); discussion; discourse; inquiry | |
| 三論宗 | さんろんしゅう | Sanron sect (of Buddhism) | |
| 主情論 | しゅじょうろん | emotionalism | |
| 単元論 | たんげんろん | singularism; monadism; monophyletism | |
| 国富論 | こくふろん | An Inquiry into the Nature and Causes of the Wealth of Nations (Adam Smith, 1776); The Wealth of Nations | |
| 型推論 | かたすいろん | type inference | |
| 弁神論 | べんしんろん | theodicy | |
| 弁論部 | べんろんぶ | debating club | |
| 形式論 | けいしきろん | formalism | |
| 悲観論 | ひかんろん | pessimism | |
| 感覚論 | かんかくろん | sensationalism | |
| 擁護論 | ようごろん | championship; defense (e.g. of a position in debate); apologetics | |
| 本体論 | ほんたいろん | ontology | |
| 本論文 | ほんろんぶん | this thesis; this article; the article under consideration | |
| 構文論 | こうぶんろん | syntax | |
| 物質論 | ぶっしつろん | materialism | |
| 目論み | もくろみ | plan; scheme; plot; design | |
| 論理上 | ろんりじょう | logically; from a logical point of view | |
| 論理型 | ろんりがた | Boolean type | |
| 賛成論 | さんせいろん | supporting argument | |
| 唯物論的 | ゆいぶつろんてき | materialistic; materialist | |
| 唯物論者 | ゆいぶつろんしゃ | believer in materialism; materialist | |
| 学習理論 | がくしゅうりろん | learning theory | |
| 弁論大会 | べんろんたいかい | speech contest | |
| 循環論法 | じゅんかんろんぽう | circular reasoning | |
| 最終弁論 | さいしゅうべんろん | closing argument; closing statement | |
| 期待理論 | きたいりろん | expectancy theory (of motivation) | |
| 言論弾圧 | げんろんだんあつ | suppression of speech; suppression of dissent; censorship | |
| 言論統制 | げんろんとうせい | regulation of freedom of speech | |
| 論告求刑 | ろんこくきゅうけい | closing argument and sentencing recommendation (of a prosecutor) | |
| 論文博士 | ろんぶんはかせ | doctoral degree (e.g. PhD) by thesis only | |
| 論理構成 | ろんりこうせい | logical layout, organization | |
| 論理構造 | ろんりこうぞう | logical structure | |
| 論理素子 | ろんりそし | gate; logic element | |
| 論理設計 | ろんりせっけい | logic design | |
| 非戦論者 | ひせんろんしゃ | pacifist | |
| 高論卓説 | こうろんたくせつ | an excellent opinion; an insightful view | |
| 中国脅威論 | ちゅうごくきょういろん | China threat theory | |
| 理論づける | りろんづける | to theorize | |
| 理論生物学 | りろんせいぶつがく | theoretical biology | |
| 記号論理学 | きごうろんりがく | symbolic logic | |
| カテゴリー論 | カテゴリーろん | category theory | |
| 党論 | とうろん | view of a political party; party opinion; party platform | n2 |
| 泛論 | はんろん | general remarks; outline | n2 |
| 余論 | よろん | obiter dictum; passing remark in a judgement | n1 |
| 付論 | ふろん | conclusion; summing up (of a thesis or presentation) | |
| 劇論 | げきろん | heated argument; heated discussion; heated debate | |
| 妙論 | みょうろん | superb theory | |
| 抑論 | そもそもろん | going back to the beginning (in a discussion, argument, etc.); returning to the fundamental points (of the issue at hand); discussion of how things began (in the first place) | |
| 拙論 | せつろん | poor argument; one's argument; one's thesis; one's essay | |
| 民論 | みんろん | public opinion | |
| 社論 | しゃろん | official editorial viewpoint of a newspaper | |
| 論い | あげつらい | arguing; discussion; criticizing; finding fault | |
| 論う | あげつらう | to discuss; to find fault with; to criticize; to criticise | |
| 論孟 | ろんもう | the Confucian Analects and the Discourses of Mencius | |
| 論衡 | ろんこう | Lunheng (collection of Chinese classic texts written by Wang Chong) | |
| 論詰 | ろんきつ | criticism | |
| 謬論 | びゅうろん | fallacy; mistaken opinion | |
| 貴論 | きろん | your thesis; your paper | |
| 迷論 | めいろん | fallacious argument; fallacy; absurd opinion | |
| 附論 | ふろん | conclusion; summing up (of a thesis or presentation) | |
| θ理論 | シータりろん | theta-theory | |
| べき論 | べきろん | idealistic argument; perfectionist ideas; impracticable ideas; reasoning over how things ought to be | |
| 一神論 | いっしんろん | monotheism | |
| 並行論 | へいこうろん | parallelism | |
| 主観論 | しゅかんろん | subjectivism | |
| 二国論 | にこくろん | two-country model (esp. China and Taiwan); two-country doctrine | |
| 人性論 | じんせいろん | A Treatise of Human Nature (book by David Hume; publ. 1739-40) | |
| 人間論 | にんげんろん | An Essay on Man (poem by Alexander Pope) | |
| 価値論 | かちろん | axiology; theory of value | |
| 修正論 | しゅうせいろん | revisionism | |
| 偶因論 | ぐういんろん | occasionalism | |
| 偶然論 | ぐうぜんろん | casualism; accidentalism | |
| 先験論 | せんけんろん | transcendentalism | |
| 公理論 | こうりろん | axiomatic theory | |
| 分離論 | ぶんりろん | separatism; secessionism | |
| 勿の論 | もちのろん | of course; certainly; naturally | |
| 単子論 | たんしろん | monadism | |
| 単意論 | たんいろん | monothelitism (theology); monotheletism | |
| 印象論 | いんしょうろん | argument based on personal impressions | |
| 反映論 | はんえいろん | reflection theory | |
| 名目論 | めいもくろん | nominalism; terminism | |
| 唯我論 | ゆいがろん | solipsism (phil.) | |
| 唯理論 | ゆいりろん | rationalism | |
| 国防論 | こくぼうろん | the question of national defense (defence) | |
| 型理論 | かたりろん | type theory | |
| 多神論 | たしんろん | polytheism | |
| 大議論 | だいぎろん | great debate; great controversy | |
| 実念論 | じつねんろん | realism (as opposed to nominalism) | |
| 実証論 | じっしょうろん | positivism | |
| 実験論 | じっけんろん | positivism; experimentalism | |
| 州権論 | しゅうけんろん | states' rights theory | |
| 常識論 | じょうしきろん | common-sense expectation; obvious conclusion; conventional wisdom; received opinion | |
| 征韓論 | せいかんろん | Seikanron; 1873 political debate on whether Korea should be conquered by military force | |
| 心情論 | しんじょうろん | emotionalism; sentimentality | |
| 心霊論 | しんれいろん | spiritualism | |
| 感性論 | かんせいろん | aesthetics; esthetics | |
| 抑止論 | よくしろん | deterrence theory | |
| 推論式 | すいろんしき | syllogism | |
| 政治論 | せいじろん | political discourse | |
| 文体論 | ぶんたいろん | stylistics | |
| 文字論 | もじろん | theory of written language | |
| 時事論 | じじろん | comments on current events | |
| 書生論 | しょせいろん | impractical argument | |
| 格理論 | かくりろん | case theory | |
| 楽天論 | らくてんろん | optimism | |
| 概念論 | がいねんろん | conceptualism | |
| 正論理 | せいろんり | positive logic | |
| 民約論 | みんやくろん | social-contract theory | |
| 水成論 | すいせいろん | neptunism | |
| 汎心論 | はんしんろん | panpsychism | |
| 汎理論 | はんりろん | panlogism | |
| 決疑論 | けつぎろん | casuistry | |
| 物活論 | ぶっかつろん | animism; hylozoism | |
| 物神論 | ぶっしんろん | hylotheism (pantheism identifying god with matter) | |
| 独我論 | どくがろん | solipsism | |
| 独断論 | どくだんろん | dogmatism; dogma | |
| 理性論 | りせいろん | rationalism | |
| 知識論 | ちしきろん | epistemology | |
| 神義論 | しんぎろん | theodicy | |
| 積極論 | せっきょくろん | positivism; progressive argument | |
| 空論家 | くうろんか | a doctrinaire | |
| 統辞論 | とうじろん | syntax | |
| 絶対論 | ぜったいろん | absolutism (phil.) | |
| 脱亜論 | だつあろん | Argument for Leaving Asia; Datsu-A Ron; editorial written by Fukuzawa Yukichi in 1885 calling for Japan to align itself with the West rather than China and Korea | |
| 自助論 | じじょろん | Self-Help (1859 book by Samuel Smiles) | |
| 討論者 | とうろんしゃ | debater | |
| 語形論 | ごけいろん | accidence; morphology | |
| 論争者 | ろんそうしゃ | disputant | |
| 論壇誌 | ろんだんし | opinion journal; serious magazine | |
| 論弁的 | ろんべんてき | discursive (i.e. proceeding by argument or reasoning rather than intuition) | |
| 論理値 | ろんりち | logical value (true or false); truth value | |
| 論理名 | ろんりめい | logical name (of a database table, key, device, etc.) | |
| 論理図 | ろんりず | logic diagram | |
| 論理行 | ろんりぎょう | logical line (of code) | |
| 論証的 | ろんしょうてき | demonstrative | |
| 論説欄 | ろんせつらん | editorial column | |
| 謀略論 | ぼうりゃくろん | conspiracy theory | |
| 護教論 | ごきょうろん | apologetics | |
| 負論理 | ふろんり | negative logic | |
| 道具論 | どうぐろん | instrumentalism | |
| 音形論 | おんけいろん | phonology (in Chomsky and Halle's system); sound pattern theory | |
| 音素論 | おんそろん | phonemics | |
| 韻律論 | いんりつろん | prosody | |
| 類体論 | るいたいろん | class field theory | |
| 養子論 | ようしろん | adoptionism | |
| M理論 | エムりろん | M-theory ("master theory" that unifies the five superstring theories) | |
| ご飯論法 | ごはんろんぽう | giving evasive answers by arguing over the definition of a word | |
| モナド論 | モナドろん | monadism; monadology | |
| 両刀論法 | りょうとうろんぽう | dilemma | |
| 人格神論 | じんかくしんろん | theism (as refers to the existence of a personal Christian god) | |
| 代数理論 | だいすうりろん | algebraic theory | |
| 党首討論 | とうしゅとうろん | debate between party leaders (in the Japanese Diet) | |
| 全廃論者 | ぜんぱいろんしゃ | abolitionist | |
| 公開討論 | こうかいとうろん | public debate; open discussion | |
| 再度弁論 | さいどべんろん | repleading; pleading again | |
| 前方推論 | ぜんぽうすいろん | forward reasoning (AI) | |
| 勿論の事 | もちろんのこと | needless to say; as a matter of course; of course; not to mention | |
| 反対弁論 | はんたいべんろん | opposing speech; rebuttal (in debate) | |
| 可換環論 | かかんかんろん | commutative algebra | |
| 名論卓説 | めいろんたくせつ | excellent opinions and theories | |
| 場の理論 | ばのりろん | field theory | |
| 境界理論 | きょうかいりろん | bounding theory | |
| 女権論者 | じょけんろんしゃ | feminist | |
| 平和論者 | へいわろんしゃ | pacifist | |
| 形式論理 | けいしきろんり | formal logic | |
| 役割理論 | やくわりりろん | role theory | |
| 後方推論 | こうほうすいろん | backward reasoning (AI) | |
| 復古論者 | ふっころんしゃ | reactionary | |
| 心の理論 | こころのりろん | theory of mind; ToM | |
| 心霊論者 | しんれいろんしゃ | spiritualist | |
| 応報刑論 | おうほうけいろん | theory of retribution; retributivism; retributive justice | |
| 悲観論者 | ひかんろんしゃ | pessimist | |
| 憲法論議 | けんぽうろんぎ | constitutional debate | |
| 懸賞論文 | けんしょうろんぶん | essay contest | |
| 改憲論者 | かいけんろんしゃ | proponent of constitutional reform; constitutional revisionist | |
| 文芸評論 | ぶんげいひょうろん | literary criticism | |
| 曖昧理論 | あいまいりろん | fuzzy theory | |
| 曖昧論理 | あいまいろんり | fuzzy logic | |
| 有神論者 | ゆうしんろんしゃ | theist; deist | |
| 束縛理論 | そくばくりろん | binding theory | |
| 核抑止論 | かくよくしろん | nuclear deterrent theory | |
| 楽観論者 | らっかんろんしゃ | optimist | |
| 機械論者 | きかいろんしゃ | mechanist | |
| 機関車論 | きかんしゃろん | locomotive theory (of economic development) | |
| 水かけ論 | みずかけろん | endless argument; pointless argument; fruitless dispute; futile discussion | |
| 決定理論 | けっていりろん | decision theory | |
| 犬に論語 | いぬにろんご | wasting one's breath (trying to explain something); (reading) the Analects of Confucius to a dog | |
| 理論哲学 | りろんてつがく | theoretical philosophy | |
| 理論通り | りろんどおり | in accordance with theory; as theorized | |
| 理論闘争 | りろんとうそう | theoretical dispute | |
| 環境理論 | かんきょうりろん | ecological theory | |
| 真贋論争 | しんがんろんそう | argument as to (about) the authenticity (of ...) | |
| 確率理論 | かくりつりろん | probability theory | |
| 科学論文 | かがくろんぶん | scientific article; scientific paper | |
| 経済原論 | けいざいげんろん | principles of economics | |
| 統率理論 | とうそつりろん | government theory | |
| 線形論理 | せんけいろんり | linear logic | |
| 言論機関 | げんろんきかん | organ of public opinion | |