澄ます (sumasu) conjugation
to clear, to make clear, to listen for
澄ます (すます, sumasu) 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 | 澄ます sumasu | 澄まします sumashimasu | The form you look up. Also the casual present and future. |
| Plain negative | 澄まさない sumasanai | 澄ましません sumashimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 澄ました sumashita | 澄ましました sumashimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 澄まさなかった sumasanakatta | 澄ましませんでした sumashimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 澄まして sumashite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 澄ましている sumashiteiru | 澄ましています sumashiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 澄ましたい sumashitai | 澄ましたいです sumashitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 澄まそう sumasou | 澄ましましょう sumashimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 澄ませる sumaseru | 澄ませます sumasemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 澄まされる sumasareru | 澄まされます sumasaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 澄まさせる sumasaseru | 澄まさせます sumasasemasu | Make or let someone do it. |
| Causative-passive | 澄まさせられる sumasaserareru | 澄まさせられます sumasaseraremasu | Be made to do it — the long one. |
| Imperative | 澄ませ sumase | 澄ましてください sumashitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 澄ますな sumasuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 澄ませば sumaseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 澄ましたら sumashitara | — | “if / when ~”. The everyday conditional. |
🔊 Tap any Japanese word to hear it spoken.
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.