口くちの悪わるい

expression, i-adjective

sharp-tongued; sarcastic; foulmouthed

Describes a person who habitually speaks in a cutting, sarcastic, or harsh way. Often used as a prenominal modifier (口の悪い人).

See also: 口が悪い

• 彼かれは口くちの悪わるいことで有ゆう名めいだ。

  He is famous for having a sharp tongue.

• 口くちの悪わるい友とも達だちにいつもからかわれる。

  I'm always teased by my sharp-tongued friend.