詰める (tsumeru) conjugation
to pack, to shorten, to work out (details)
詰める (つめる, tsumeru) 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 | 詰める tsumeru | 詰めます tsumemasu | The form you look up. Also the casual present and future. |
| Plain negative | 詰めない tsumenai | 詰めません tsumemasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 詰めた tsumeta | 詰めました tsumemashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 詰めなかった tsumenakatta | 詰めませんでした tsumemasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 詰めて tsumete | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 詰めている tsumeteiru | 詰めています tsumeteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 詰めたい tsumetai | 詰めたいです tsumetaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 詰めよう tsumeyou | 詰めましょう tsumemashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 詰められる tsumerareru | 詰められます tsumeraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 詰められる tsumerareru | 詰められます tsumeraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 詰めさせる tsumesaseru | 詰めさせます tsumesasemasu | Make or let someone do it. |
| Causative-passive | 詰めさせられる tsumesaserareru | 詰めさせられます tsumesaseraremasu | Be made to do it — the long one. |
| Imperative | 詰めろ tsumero | 詰めてください tsumetekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 詰めるな tsumeruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 詰めれば tsumereba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 詰めたら tsumetara | — | “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.