悔やむ (kuyamu) conjugation
to regret, to mourn
悔やむ (くやむ, kuyamu) is a godan verb. Godan verbs change their final kana up and down its column of the kana chart — the a-row for negatives, the i-row before ます, the e-row for potential and ば. Every form below is tappable — hear it, then say it back.
Conjugation table
| Form | Plain (casual) | Polite (~ます) | When you use it |
|---|---|---|---|
| Dictionary / plain | 悔やむ kuyamu | 悔やみます kuyamimasu | The form you look up. Also the casual present and future. |
| Plain negative | 悔やまない kuyamanai | 悔やみません kuyamimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 悔やんだ kuyanda | 悔やみました kuyamimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 悔やまなかった kuyamanakatta | 悔やみませんでした kuyamimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 悔やんで kuyande | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 悔やんでいる kuyandeiru | 悔やんでいます kuyandeimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 悔やみたい kuyamitai | 悔やみたいです kuyamitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 悔やもう kuyamou | 悔やみましょう kuyamimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 悔やめる kuyameru | 悔やめます kuyamemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 悔やまれる kuyamareru | 悔やまれます kuyamaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 悔やませる kuyamaseru | 悔やませます kuyamasemasu | Make or let someone do it. |
| Causative-passive | 悔やまされる kuyamasareru | 悔やまされます kuyamasaremasu | Be made to do it — the long one. |
| Imperative | 悔やめ kuyame | 悔やんでください kuyandekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 悔やむな kuyamuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 悔やめば kuyameba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 悔やんだら kuyandara | — | “if / when ~”. The everyday conditional. |
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Why it conjugates this way
Godan verbs change their final kana up and down its column of the kana chart — the a-row for negatives, the i-row before ます, the e-row for potential and ば.
See the full rules on the verb conjugation guide.