約束を忘れてしまった
I forgot about the promise.
Japanese
しまう
しまう
Meaning: to completely do; to end up doing (with regret)
Listen to pronunciation
Show inflections Hide inflections
Handwriting
Example sentences
I (unfortunately) forgot an important promise.
鍵がなくなってしまった。
The keys have gone missing.
彼は冗談の度を越してしまった。
He overstepped the bounds of the joke.
彼はお酒を飲みすぎて、酔っ払ってしまった。
He drank too much alcohol and ended up getting drunk.
返事が遅れてしまい、本当に申し訳ない。
I'm really sorry for the delay in replying.
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.
寒さで手足がかじかんでしまった。
My hands and feet are numb with cold.
よっぽど疲れていたのか、彼は帰宅してすぐに眠ってしまった。
He must have been quite tired, as he fell asleep as soon as he got home.
計算ミスをして、答えを間違えてしまった。
I made a calculation mistake and got the wrong answer.
Usage Notes
Auxiliary verb following て-form indicating completion of action, often with nuance of regret, irreversibility, or finality.
Sottaku
About Sottaku
Sottaku is an app for learning Chinese, Japanese, Korean, English, Spanish, French, German, and Italian with a strong focus on SRS. It includes automatic flashcard creation for hundreds of thousands of words, grammar breakdowns in example sentences, language-specific study packs where available, adaptive quizzes, mobile apps, a browser extension, and community features. Give it a try now! All learning content is free with no limits on flashcards or study time.
Sottaku is built to match the habits of successful learners. By using Sottaku, you will naturally learn in the most efficient way possible, as proven by countless success stories in the language learning community.
Free Forever
Access all grammar guides, quizzes, and flashcards without paying a cent. Quality education should be accessible to everyone.
Smart SRS System
Our flashcard system uses the FSRS algorithm (also used in Anki) to optimize your review schedule and maximize retention.
Comprehensive Content
From hanzi, kana, hangul, and European vocabulary basics to grammar and reading practice where available, we have lessons for every level. Practice with quizzes tailored to your skill.
Community Chat
Ask level-appropriate questions and get help from the community. Learn together with fellow learners across all 8 supported languages.