打うって変かわる

godan verb (-ru), intransitive verb

change completely; change suddenly; be transformed

Describes a dramatic, often unexpected shift in state, attitude, or situation. Frequently used with ～ように or ～たように to compare before and after.

• 彼かれの態たい度どは打うって変かわって優やさしくなった。

  His attitude changed completely and became kind.

• 打うって変かわったように静しずかになった。

  It suddenly became quiet, as if transformed.