| 恋 | こい | (romantic) love | n2 |
| 恋愛 | れんあい | love; romance; tender passion; emotion | n2 |
| 恋人 | こいびと | lover; sweetheart; boyfriend; girlfriend | n2 |
| 恋しい | こいしい | yearned for; longed for; missed | n3 |
| 初恋 | はつこい | first love; puppy love | n1 |
| 恋する | こいする | to fall in love (with); to love | n1 |
| 恋う | こう | to love | n5 |
| 失恋 | しつれん | disappointed love; broken heart; unrequited love; being lovelorn | n1 |
| 恋心 | こいごころ | (feelings of) love | |
| 恋文 | こいぶみ | love letter | |
| 恋慕 | れんぼ | love; attachment; tender emotions; falling in love | |
| 色恋 | いろこい | sensual love; love affair | |
| 恋情 | れんじょう | love; attachment; lovesickness | |
| 恋愛関係 | れんあいかんけい | love affair; love relationship | |
| 悲恋 | ひれん | blighted love; disappointed love | |
| 片恋 | かたこい | unrequited love; one-sided love | |
| 恋着 | れんちゃく | attachment; love | |
| 狂恋 | きょうれん | mad love; excessive infatuation | |
| 恋女房 | こいにょうぼう | one's dear wife | |
| 恋仲 | こいなか | being in love with each other | |
| 恋々 | れんれん | affectionately attached; reluctant to part | |
| 恋歌 | こいうた | love song; love poem | |
| 恋愛感情 | れんあいかんじょう | amorous feelings; feeling of being in love | |
| 恋い慕う | こいしたう | to miss; to yearn for | |
| 恋路 | こいじ | romance; love's pathway | |
| 恋敵 | こいがたき | one's rival in love | |
| 人恋しい | ひとこいしい | longing for others; wanting company | |
| 恋猫 | こいねこ | cat in heat; cat in season | |
| 横恋慕 | よこれんぼ | illicit love | |
| 恋いこがれる | こいこがれる | to yearn (for); to pine (for); to long (for); to be madly in love (with) | |
| 恋風 | こいかぜ | love's zephyr | |
| 恋愛観 | れんあいかん | one's view on love; one's philosophy of love | |
| 恋活 | こいかつ | looking for love; searching for a lover | |
| 恋人同士 | こいびとどうし | pair of lovers; couple | |
| 恋愛運 | れんあいうん | one's romantic fate; one's luck in love | |
| 恋物語 | こいものがたり | love story | |
| 恋い焦がれる | こいこがれる | to yearn (for); to pine (for); to long (for); to be madly in love (with) | |
| 恋愛映画 | れんあいえいが | romantic film; love movie | |
| 恋煩い | こいわずらい | lovesickness | |
| 邪恋 | じゃれん | illicit love | |
| 社内恋愛 | しゃないれんあい | office romance; office love affair | |
| 恋愛下手 | れんあいべた | bad at romance; awkward in relationships | |
| 恋愛対象 | れんあいたいしょう | object of romantic interest; potential love interest | |
| 恋こがれる | こいこがれる | to yearn (for); to pine (for); to long (for); to be madly in love (with) | |
| 恋愛小説 | れんあいしょうせつ | love romance; love story; romance; romance story | |
| 遠距離恋愛 | えんきょりれんあい | long distance relationship | |
| 恋愛話 | れんあいばなし | dating gossip; girls' talk; love stories | |
| 恋模様 | こいもよう | romance; love affair | |
| 自由恋愛 | じゆうれんあい | free love | |
| はつ恋 | はつこい | first love; puppy love | n1 |
| 恋人未満 | こいびとみまん | couple who are more than friends, but not in an intimate relationship | |
| 恋愛禁止 | れんあいきんし | love ban; relationship ban; talent agency rule forbidding its clients from getting involved in romantic relationships | |
| 恋愛結婚 | れんあいけっこん | love marriage | |
| 恋恋 | れんれん | affectionately attached; reluctant to part | |
| 恋病 | こいやまい | lovesickness | |
| 恋話 | こいバナ | talking about one's love interests; girls' talk; gossiping | |
| 大恋愛 | だいれんあい | great love; passionate affair | |
| 恋バナ | こいバナ | talking about one's love interests; girls' talk; gossiping | |
| 恋愛物 | れんあいもの | love story; romance | |
| 色恋沙汰 | いろこいざた | love affair | |
| 恋焦がれる | こいこがれる | to yearn (for); to pine (for); to long (for); to be madly in love (with) | |
| 恋衣 | こいごろも | garb of love; metaphor for love kept as close to one as clothing | |
| 恋愛もの | れんあいもの | love story; romance | |
| 恋愛遍歴 | れんあいへんれき | history of one's love affairs | |
| 悲恋物語 | ひれんものがたり | tragic love story; tale of tragic love | |
| 疑似恋愛 | ぎじれんあい | pseudo-romance; pseudo (mock) love affair | |
| 恋いしい | こいしい | yearned for; longed for; missed | n3 |
| 恋仇 | こいがたき | one's rival in love | |
| 恋塚 | こいづか | burial mound for person who died for love | |
| 恋妻 | こいづま | loving wife | |
| 恋死 | こいじに | dying of love | |
| 恋水 | こいみず | tears of love | |
| 恋河 | こいかわ | oceans of love | |
| 恋草 | こいぐさ | lovesickness | |
| 破恋 | はれん | disappointed love; broken heart; unrequited love; being lovelorn | |
| 秘恋 | ひれん | secret love | |
| 遠恋 | えんれん | long distance relationship | |
| ひ恋し | ひこいし | desire for a fire that comes with the cold of autumn | |
| エロ恋 | エロこい | purely sexual love; highly sexual love | |
| ガチ恋 | ガチこい | being in love with an idol, actor, etc.; fan who is in love with an idol, actor, etc. | |
| リア恋 | リアこい | being in love with an idol, actor, etc.; fan who is in love with an idol, actor, etc. | |
| 恋いる | こいる | to love | |
| 恋し鳥 | こいしどり | lesser cuckoo (Cuculus poliocephalus) | |
| 恋の歌 | こいのうた | love song; love poem | |
| 恋の病 | こいのやまい | lovesickness | |
| 恋の闇 | こいのやみ | losing one's reason due to love; lack of judgment due to love | |
| 恋は闇 | こいはやみ | love is blind | |
| 恋ばな | こいバナ | talking about one's love interests; girls' talk; gossiping | |
| 恋占い | こいうらない | love fortune-telling | |
| 恋患い | こいわずらい | lovesickness | |
| 恋慕う | こいしたう | to miss; to yearn for | |
| 恋慰め | こいなぐさめ | comforting the lovelorn | |
| 恋死に | こいじに | dying of love | |
| 恋疲れ | こいづかれ | haggard from love | |
| 恋盛り | こいざかり | lovesick period | |
| 火恋し | ひこいし | desire for a fire that comes with the cold of autumn | |
| 片恋い | かたこい | unrequited love; one-sided love | |
| エア恋愛 | エアれんあい | pretend romance; fantasy relationship | |
| 分散恋愛 | ぶんさんれんあい | (gen. of a woman) loving two or more partners without favour | |
| 国際恋愛 | こくさいれんあい | international romantic relationship | |
| 恋い乱る | こいみだる | to be lovesick | |
| 恋い忍ぶ | こいしのぶ | to live on love | |
| 恋い死に | こいじに | dying of love | |
| 恋い籠る | こいこもる | to cause heartache because of a (hidden) love; to be miserable because of love | |
| 恋がたき | こいがたき | one's rival in love | |
| 恋しがる | こいしがる | to yearn for; to miss | |
| 恋の悩み | こいのなやみ | pain of love; love troubles | |
| 恋の手管 | こいのてくだ | wooing technique; the way to a man's (woman's) heart | |
| 恋は盲目 | こいはもうもく | reason ends where love begins; in love, reason takes flight; love is a blind guide; love makes fools of us all | |
| 恋をする | こいをする | to fall in love | |
| 恋人同志 | こいびとどうし | pair of lovers; couple | |
| 恋人気分 | こいびときぶん | the feeling between (new) lovers | |
| 恋人繋ぎ | こいびとつなぎ | holding hands with fingers interlocked | |
| 恋愛べた | れんあいべた | bad at romance; awkward in relationships | |
| 恋愛ベタ | れんあいべた | bad at romance; awkward in relationships | |
| 恋愛モノ | れんあいもの | love story; romance | |
| 恋愛体質 | れんあいたいしつ | predisposition for love | |
| 恋愛問題 | れんあいもんだい | love problems; problem related to love | |
| 恋愛妄想 | れんあいもうそう | erotomania | |
| 恋愛指南 | れんあいしなん | instruction in the ways of love | |
| 恋愛活動 | れんあいかつどう | looking for love; searching for a lover | |
| 恋愛遊戯 | れんあいゆうぎ | trifling with love | |
| 籠鳥恋雲 | ろうちょうれんうん | longing for freedom when tied down; caged bird's longing for the open sky | |
| 仕事が恋人 | しごとがこいびと | (being) married to one's work | |
| 恋い初める | こいそめる | to begin to love | |
| 恋い暮らす | こいくらす | to live deeply in love | |
| 恋に落ちる | こいにおちる | to fall in love | |
| 恋の鞘当て | こいのさやあて | rivalry in love; rivalry for the heart of a woman | |
| 恋わずらい | こいわずらい | lovesickness | |
| 恋人つなぎ | こいびとつなぎ | holding hands with fingers interlocked | |
| 恋愛ゲーム | れんあいゲーム | romance-focused video game | |
| 恋愛ドラマ | れんあいドラマ | romantic TV series; romance TV show | |
| 道ならぬ恋 | みちならぬこい | illicit love affair | |
| 恋のさやあて | こいのさやあて | rivalry in love; rivalry for the heart of a woman | |
| 恋の骨折り損 | こいのほねおりぞん | Love's Labour's Lost (Shakespeare) | |
| 恋はデジャブ | こいはデジャブ | Groundhog Day (1993 film) | |
| 恋は思案の外 | こいはしあんのほか | love is without reason | |
| 恋愛至上主義 | れんあいしじょうしゅぎ | love for love's sake | |
| 老いらくの恋 | おいらくのこい | love in old age; autumn romance | |
| 恋の骨折り甲斐 | こいのほねおりがい | Love's Labour's Won (Shakespeare) | |
| 恋はデジャ・ブ | こいはデジャブ | Groundhog Day (1993 film) | |
| 友達以上恋人未満 | ともだちいじょうこいびとみまん | more than friends, less than lovers | |
| 友だち以上恋人未満 | ともだちいじょうこいびとみまん | more than friends, less than lovers | |
| 恋に上下の差別無し | こいにじょうげのさべつなし | love makes men equal | |
| 恋に上下の隔てなし | こいにじょうげのへだてなし | love makes people equal; love is a leveler; love is blind | |
| チャタレイ夫人の恋人 | チャタレイふじんのこいびと | Lady Chatterley's Lover | |
| 人の恋路を邪魔する奴は馬に蹴られて死んじまえ | ひとのこいじをじゃまするやつはうまにけられてしんじまえ | one will inevitably suffer the consequences for interfering in a couple's relationship; may whoever interferes with another's love affair be kicked by a horse and die | |