弱る (yowaru) conjugation
to weaken, to be troubled, to be emaciated
弱る (よわる, yowaru) 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 | 弱る yowaru | 弱ります yowarimasu | The form you look up. Also the casual present and future. |
| Plain negative | 弱らない yowaranai | 弱りません yowarimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 弱った yowatta | 弱りました yowarimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 弱らなかった yowaranakatta | 弱りませんでした yowarimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 弱って yowatte | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 弱っている yowatteiru | 弱っています yowatteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 弱りたい yowaritai | 弱りたいです yowaritaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 弱ろう yowarou | 弱りましょう yowarimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 弱れる yowareru | 弱れます yowaremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 弱られる yowarareru | 弱られます yowararemasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 弱らせる yowaraseru | 弱らせます yowarasemasu | Make or let someone do it. |
| Causative-passive | 弱らされる yowarasareru | 弱らされます yowarasaremasu | Be made to do it — the long one. |
| Imperative | 弱れ yoware | 弱ってください yowattekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 弱るな yowaruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 弱れば yowareba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 弱ったら yowattara | — | “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.