太る (futoru) conjugation
to gain weight
太る (ふとる, futoru) 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 | 太る futoru | 太ります futorimasu | The form you look up. Also the casual present and future. |
| Plain negative | 太らない futoranai | 太りません futorimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 太った futotta | 太りました futorimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 太らなかった futoranakatta | 太りませんでした futorimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 太って futotte | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 太っている futotteiru | 太っています futotteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 太りたい futoritai | 太りたいです futoritaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 太ろう futorou | 太りましょう futorimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 太れる futoreru | 太れます futoremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 太られる futorareru | 太られます futoraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 太らせる futoraseru | 太らせます futorasemasu | Make or let someone do it. |
| Causative-passive | 太らされる futorasareru | 太らされます futorasaremasu | Be made to do it — the long one. |
| Imperative | 太れ futore | 太ってください futottekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 太るな futoruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 太れば futoreba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 太ったら futottara | — | “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.