加える (kuwaeru) conjugation
to append, to sum up, to add (up)
加える (くわえる, kuwaeru) 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 | 加える kuwaeru | 加えます kuwaemasu | The form you look up. Also the casual present and future. |
| Plain negative | 加えない kuwaenai | 加えません kuwaemasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 加えた kuwaeta | 加えました kuwaemashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 加えなかった kuwaenakatta | 加えませんでした kuwaemasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 加えて kuwaete | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 加えている kuwaeteiru | 加えています kuwaeteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 加えたい kuwaetai | 加えたいです kuwaetaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 加えよう kuwaeyou | 加えましょう kuwaemashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 加えられる kuwaerareru | 加えられます kuwaeraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 加えられる kuwaerareru | 加えられます kuwaeraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 加えさせる kuwaesaseru | 加えさせます kuwaesasemasu | Make or let someone do it. |
| Causative-passive | 加えさせられる kuwaesaserareru | 加えさせられます kuwaesaseraremasu | Be made to do it — the long one. |
| Imperative | 加えろ kuwaero | 加えてください kuwaetekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 加えるな kuwaeruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 加えれば kuwaereba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 加えたら kuwaetara | — | “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.