察する (sassuru) conjugation
to guess, to sense, to judge
察する (さっする, sassuru) 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 | 察する sassuru | 察します sasshimasu | The form you look up. Also the casual present and future. |
| Plain negative | 察しない sasshinai | 察しません sasshimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 察した sasshita | 察しました sasshimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 察しなかった sasshinakatta | 察しませんでした sasshimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 察して sasshite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 察している sasshiteiru | 察しています sasshiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 察したい sasshitai | 察したいです sasshitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 察しよう sasshiyou | 察しましょう sasshimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 察できる saddekiru | 察できます saddekimasu | “can ~”. What you could do; the object often takes が. |
| Passive | 察される sassareru | 察されます sassaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 察させる sassaseru | 察させます sassasemasu | Make or let someone do it. |
| Causative-passive | 察させられる sassaserareru | 察させられます sassaseraremasu | Be made to do it — the long one. |
| Imperative | 察しろ sasshiro | 察してください sasshitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 察するな sassuruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 察すれば sassureba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 察したら sasshitara | — | “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.