力ちから抜ぬけ

noun, noun or participle which takes 'suru', intransitive verb

discouragement; disappointment; loss of motivation

Describes a state of losing energy, motivation, or spirit, often due to a setback or letdown. Can be used as a noun or with する to mean 'become discouraged'.

• 試し験けんに落おちて、力ちから抜ぬけしてしまった。

  I failed the exam and became completely discouraged.

• 彼かれの一ひと言ことで力ちから抜ぬけした。

  I lost all motivation after hearing his remark.