改める (aratameru) conjugation
to change, to reform, to revise
改める (あらためる, aratameru) 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 | 改める aratameru | 改めます aratamemasu | The form you look up. Also the casual present and future. |
| Plain negative | 改めない aratamenai | 改めません aratamemasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 改めた aratameta | 改めました aratamemashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 改めなかった aratamenakatta | 改めませんでした aratamemasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 改めて aratamete | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 改めている aratameteiru | 改めています aratameteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 改めたい aratametai | 改めたいです aratametaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 改めよう aratameyou | 改めましょう aratamemashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 改められる aratamerareru | 改められます aratameraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 改められる aratamerareru | 改められます aratameraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 改めさせる aratamesaseru | 改めさせます aratamesasemasu | Make or let someone do it. |
| Causative-passive | 改めさせられる aratamesaserareru | 改めさせられます aratamesaseraremasu | Be made to do it — the long one. |
| Imperative | 改めろ aratamero | 改めてください aratametekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 改めるな aratameruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 改めれば aratamereba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 改めたら aratametara | — | “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.