正しょう気きを失うしなう

expression, godan verb (-u)

lose one's mind; go crazy; lose one's senses

Used when someone becomes mentally unstable, irrational, or acts wildly. Often implies a temporary loss of reason due to shock, anger, or intoxication.

• あまりのショックで彼かれは正しょう気きを失うしなった。

  He lost his mind from the shock.

• 酒さけに酔よって正しょう気きを失うしなう。

  I lose my senses when I get drunk.

expression, godan verb (-u)

lose consciousness

Refers to physically losing consciousness, fainting, or passing out. Less common than the mental sense; 意識を失う is more frequent for this meaning.

• 彼かれは頭あたまを強つよく打うって正しょう気きを失うしなった。

  He hit his head hard and lost consciousness.