増す (masu) conjugation
to increase, to gain
増す (ます, masu) 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 | 増す masu | 増します mashimasu | The form you look up. Also the casual present and future. |
| Plain negative | 増さない masanai | 増しません mashimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 増した mashita | 増しました mashimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 増さなかった masanakatta | 増しませんでした mashimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 増して mashite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 増している mashiteiru | 増しています mashiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 増したい mashitai | 増したいです mashitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 増そう masou | 増しましょう mashimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 増せる maseru | 増せます masemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 増される masareru | 増されます masaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 増させる masaseru | 増させます masasemasu | Make or let someone do it. |
| Causative-passive | 増させられる masaserareru | 増させられます masaseraremasu | Be made to do it — the long one. |
| Imperative | 増せ mase | 増してください mashitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 増すな masuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 増せば maseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 増したら mashitara | — | “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.