増える (fueru) conjugation
to increase, to multiply
増える (ふえる, fueru) is an ichidan verb. Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes. 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 | 増える fueru | 増えます fuemasu | The form you look up. Also the casual present and future. |
| Plain negative | 増えない fuenai | 増えません fuemasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 増えた fueta | 増えました fuemashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 増えなかった fuenakatta | 増えませんでした fuemasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 増えて fuete | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 増えている fueteiru | 増えています fueteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 増えたい fuetai | 増えたいです fuetaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 増えよう fueyou | 増えましょう fuemashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 増えられる fuerareru | 増えられます fueraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 増えられる fuerareru | 増えられます fueraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 増えさせる fuesaseru | 増えさせます fuesasemasu | Make or let someone do it. |
| Causative-passive | 増えさせられる fuesaserareru | 増えさせられます fuesaseraremasu | Be made to do it — the long one. |
| Imperative | 増えろ fuero | 増えてください fuetekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 増えるな fueruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 増えれば fuereba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 増えたら fuetara | — | “if / when ~”. The everyday conditional. |
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Why it conjugates this way
Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes.
See the full rules on the verb conjugation guide.
