modality N3 common casualpolitewritten

〜て済む — can settle/manage by just ~ing

〜て済む・てすむ

Builds on て形

Meaning

it's settled / one can get by with just ~ing — the matter is taken care of without needing anything more

今回こんかいは注意ちゅういされるだけで済すんだ。

This time I got off with just a warning.

Attaches to	Form	Example
Verb て-form (also Nで / i-adj く) + 済む	Vて / Nで / Aく + 済む	謝あやまって済む / 電話でんわで済む / 安やすく済すむ

メールで連絡れんらくして済すむなら、わざわざ行いく必要ひつようはない。

If a message will do the job, there's no need to go all that way.

修理しゅうりは思おもったより安やすく済すんだ。

The repair came to less than I'd expected.

済すむ = 'to be finished / suffice'. The negative 〜では済まない ('won't be settled by ~ alone') warns that something more serious is required: 謝あやまって済む問題もんだいではない ('this isn't something an apology will fix').

Jengo shows 〜て済む the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.

Sources Compiled from published Japanese grammar references.