達する (tassuru) conjugation
to reach, to get to
達する (たっする, tassuru) 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 | 達する tassuru | 達します tasshimasu | The form you look up. Also the casual present and future. |
| Plain negative | 達しない tasshinai | 達しません tasshimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 達した tasshita | 達しました tasshimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 達しなかった tasshinakatta | 達しませんでした tasshimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 達して tasshite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 達している tasshiteiru | 達しています tasshiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 達したい tasshitai | 達したいです tasshitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 達しよう tasshiyou | 達しましょう tasshimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 達できる taddekiru | 達できます taddekimasu | “can ~”. What you could do; the object often takes が. |
| Passive | 達される tassareru | 達されます tassaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 達させる tassaseru | 達させます tassasemasu | Make or let someone do it. |
| Causative-passive | 達させられる tassaserareru | 達させられます tassaseraremasu | Be made to do it — the long one. |
| Imperative | 達しろ tasshiro | 達してください tasshitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 達するな tassuruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 達すれば tassureba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 達したら tasshitara | — | “if / when ~”. The everyday conditional. |
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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.