寝ね返がえりを打うつ

expression, godan verb (-tsu)

turn over in sleep; toss and turn

Describes physically rolling over or shifting position while lying down, especially during sleep.

• 夜よ中なかに何なん度ども寝ね返がえりを打うった。

  I turned over many times during the night.

expression, godan verb (-tsu)

change sides; double-cross; betray

Figurative use: switching allegiance or betraying someone, often in political, business, or personal contexts.

• 彼かれは敵てき側がわに寝ね返がえりを打うった。

  He went over to the enemy side.