| 女性 | じょせい | woman; female; feminine gender | n5 |
| 性質 | せいしつ | nature (of a person); disposition; temperament; character | n2 |
| 性格 | せいかく | character (of a person); personality; disposition; nature | n4 |
| 男性 | だんせい | man; male; masculine gender | n5 |
| 性 | せい | nature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.) | n3 |
| 可能性 | かのうせい | possibility; chance; likelihood; probability | n3 |
| 個性 | こせい | individuality; personality; quirk; idiosyncrasy | n2 |
| 理性 | りせい | reason; reasoning power; (one's) sense | n2 |
| 性能 | せいのう | ability; performance; efficiency | n2 |
| 根性 | こんじょう | willpower; guts; determination; grit | n2 |
| 気性 | きしょう | disposition; temperament; temper; nature | n2 |
| 本性 | ほんしょう | true character; real nature | |
| 性分 | しょうぶん | nature; disposition | |
| 特性 | とくせい | special characteristic; special quality; trait; idiosyncrasy | n2 |
| 素性 | すじょう | birth; lineage; parentage; origin | |
| 天性 | てんせい | nature; natural constitution; innate disposition | |
| 多様性 | たようせい | diversity; variety | |
| 相性 | あいしょう | affinity; compatibility; chemistry (between people) | n2 |
| 信頼性 | しんらいせい | credibility; authenticity; confidence; reliability | |
| 性急 | せいきゅう | hasty; rash; rushed; hurried | n1 |
| 異性 | いせい | the opposite sex; isomerism | |
| 性情 | せいじょう | nature; disposition | n3 |
| 性根 | しょうね | nature; character; disposition | |
| 知性 | ちせい | intelligence | |
| 無性に | むしょうに | very much; intensely; overwhelmingly; excessively | |
| 感受性 | かんじゅせい | sensitivity; sensibility; susceptibility; receptivity | n2 |
| 性的 | せいてき | sexual (i.e. relating to biological sex); sexual (relations, attraction, abuse, etc.) | n2 |
| 習性 | しゅうせい | habit; behavior; behaviour; trait | n1 |
| 野性 | やせい | wildness; wild nature; untamed nature; savage nature | n2 |
| 性慾 | せいよく | sexual desire; sex drive; lust | |
| 感性 | かんせい | sensitivity; sensitiveness; sense (of ...) | n2 |
| 悪性 | あくせい | malignant (cancer); virulent; pernicious (anemia, anaemia) | |
| 属性 | ぞくせい | attribute; property; attribute; alignment (in a role-playing game) | n1 |
| 性癖 | せいへき | disposition; inclination; characteristic; idiosyncrasy | |
| 慢性 | まんせい | chronic (illness) | n1 |
| 性別 | せいべつ | (distinction of) sex; gender | n3 |
| 重要性 | じゅうようせい | importance; gravity | |
| 母性 | ぼせい | motherhood; maternity | n1 |
| 安全性 | あんぜんせい | safety; security | |
| 惰性 | だせい | force of habit; inertia | |
| 関係性 | かんけいせい | relationship; relation | |
| 無性 | むせい | sexless; nonsexual; asexual; asexual | |
| 急性 | きゅうせい | acute (illness) | |
| 機能性 | きのうせい | functionality | |
| 活性化 | かっせいか | stimulation (e.g. of an economy); revitalization (e.g. of a town); rejuvenation; invigoration | n1 |
| 品性 | ひんせい | character; personality | |
| 人性 | じんせい | human nature; instinct; humanity; humanism | n3 |
| 生産性 | せいさんせい | productivity | |
| 同性 | どうせい | same sex | |
| 性欲 | せいよく | sexual desire; sex drive; lust | |
| 必要性 | ひつようせい | necessity; need | |
| 利便性 | りべんせい | convenience; user-friendliness | |
| 両性 | りょうせい | both sexes | n2 |
| 方向性 | ほうこうせい | direction; trend; course (of action); directionality | |
| 性行 | せいこう | character and conduct | n4 |
| 柔軟性 | じゅうなんせい | flexibility; pliability; softness; elasticity | n2 |
| 中性 | ちゅうせい | neutrality (incl. chemical, electrical, etc.); indifference; sexlessness; androgyny | n1 |
| 陰性 | いんせい | negative (result); gloomy; negative (e.g. attitude); pessimistic | n3 |
| 魔性 | ましょう | devilish; diabolical | |
| 甲斐性 | かいしょう | resourcefulness; ability (esp. to earn a living); dependability; reliability | n2 |
| 専門性 | せんもんせい | specialization; specialty; speciality; expertise | |
| 耐久性 | たいきゅうせい | durability | |
| 危険性 | きけんせい | (degree of) risk; riskiness; danger | |
| 苦労性 | くろうしょう | nervous temperament; worry habit; pessimistic nature; pessimism | |
| 個性的 | こせいてき | individual; distinctive; unique; characteristic | |
| 有効性 | ゆうこうせい | validity; effectiveness | |
| 高性能 | こうせいのう | high efficiency; high performance | |
| 神性 | しんせい | divinity | n3 |
| 悟性 | ごせい | wisdom; understanding | |
| 操作性 | そうさせい | operability; usability; user friendliness; ease of use | |
| 実用性 | じつようせい | practicality; utility; usefulness | |
| 性悪 | しょうわる | ill-natured; inconstancy | |
| 獣性 | じゅうせい | brutality; animal nature | |
| 脆弱性 | ぜいじゃくせい | vulnerability; weakness; fragility; vulnerability | |
| 精神性 | せいしんせい | spirituality; spiritual nature | |
| 徳性 | とくせい | moral character or consciousness | n2 |
| 仏性 | ぶっしょう | Buddha-nature | |
| 正確性 | せいかくせい | accuracy | |
| 弾性 | だんせい | elasticity | n5 |
| 人間性 | にんげんせい | humanity; human nature | n1 |
| 凝り性 | こりしょう | tendency to become totally absorbed in something; monomania; perfectionism; fastidiousness | |
| 相対性原理 | そうたいせいげんり | principle of relativity | |
| 同性愛 | どうせいあい | homosexuality; homosexual love | |
| 酸性 | さんせい | acidity; acidic | n2 |
| 活性 | かっせい | activity; active | n1 |
| 性向 | せいこう | inclination; tendency; nature; character | n4 |
| 耐性 | たいせい | resistance (to heat, corrosion, etc.); tolerance (to a drug, pain, etc.); resistance (to drugs, pesticides, etc.) | n1 |
| 性懲り | しょうこり | repenting; improving one's nature | |
| 関連性 | かんれんせい | relatedness; associativity; relation; relationship | |
| 性器 | せいき | genitals | n3 |
| 毒性 | どくせい | toxicity; virulence; toxic; virulent | |
| 冷え性 | ひえしょう | sensitivity to cold; poor circulation | |
| 相対性理論 | そうたいせいりろん | theory of relativity | |
| 適性 | てきせい | aptitude; aptness; suitability | n2 |
| 陽性 | ようせい | positive (result); positive (attitude); cheerful; optimistic | n1 |
| 主体性 | しゅたいせい | independence of will or action; self-direction; autonomy; initiative | n1 |
| 創造性 | そうぞうせい | creativity | |
| 安定性 | あんていせい | stability; security; equilibrium | |
| 透明性 | とうめいせい | transparency | |
| 性交 | せいこう | sexual intercourse; sex; coitus | n4 |