InitialJ
N4verbte-formcompletion

てしまう (te shimau) - Completely/Regrettably

[Verb て] + しまう

Quick answer

[Verb て] + しまう means "Do something completely or regrettably". This N4 pattern appears often in everyday conversation. Examples and practice exercises are listed below.

Meaning

Do something completely or regrettably

Explanation

てしまう emphasizes completion or expresses regret.

Examples

宿題を忘れてしまいました。
しゅくだいをわすれてしまいました。
I forgot my homework (regrettably).
宿—Lodging題—Topic忘—Forget
全部食べてしまいました。
ぜんぶたべてしまいました。
I ate it all up (completely).
全—All部—Part食—Eat

Practice this grammar

[Verb て] + しまう

Which sentence correctly uses "てしまう (te shimau) - Completely/Regrettably"?

Vocabulary from these examples

部PartN3全AllN3食EatN5題TopicN4宿LodgingN3忘ForgetN3

Last updated Jul 4, 2026