脱する (dassuru) conjugation
to escape from, to get out
脱する (だっする, dassuru) is an irregular verb. Only する and 来る are truly irregular, and every learner meets them in week one. 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 | 脱する dassuru | 脱します dasshimasu | The form you look up. Also the casual present and future. |
| Plain negative | 脱しない dasshinai | 脱しません dasshimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 脱した dasshita | 脱しました dasshimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 脱しなかった dasshinakatta | 脱しませんでした dasshimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 脱して dasshite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 脱している dasshiteiru | 脱しています dasshiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 脱したい dasshitai | 脱したいです dasshitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 脱しよう dasshiyou | 脱しましょう dasshimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 脱できる daddekiru | 脱できます daddekimasu | “can ~”. What you could do; the object often takes が. |
| Passive | 脱される dassareru | 脱されます dassaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 脱させる dassaseru | 脱させます dassasemasu | Make or let someone do it. |
| Causative-passive | 脱させられる dassaserareru | 脱させられます dassaseraremasu | Be made to do it — the long one. |
| Imperative | 脱しろ dasshiro | 脱してください dasshitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 脱するな dassuruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 脱すれば dassureba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 脱したら dasshitara | — | “if / when ~”. The everyday conditional. |
🔊 Tap any Japanese word to hear it spoken.
Why it conjugates this way
Only する and 来る are truly irregular, and every learner meets them in week one.
See the full rules on the verb conjugation guide.