Japanese

しまう

しまう
Meaning: to completely do; to end up doing (with regret)
Part of Speech: Auxiliary verb

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Verb inflections

Form Affirmative Negative
Present しまう しまわない
Polite しまいます しまいません
Past しまった しまわなかった
Polite + Past しまいました しまいませんでした
Te-form しまって しまわなくて
Potential しまえる しまえない
Passive しまわれる しまわれない
Causative しまわせる しまわせない
Causative + Passive しまわされる しまわされない
Imperative しまえ しまうな

Example sentences

大切な約束を忘れてしまった
I (unfortunately) forgot an important promise.
彼は冗談の度を越してしまった。
He overstepped the bounds of the joke.
この時計は、落とした拍子に壊れてしまった。
This watch broke when I dropped it.
どれだけ後悔しても、起きてしまったことはどうしようもない。
No matter how much you regret it, what has already happened cannot be helped.
大勢の前で大恥をかいてしまった。
I ended up being greatly humiliated in front of many people.

Usage Notes

Auxiliary verb following て-form indicating completion of action, often with nuance of regret, irreversibility, or finality.

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