下手へたくそ

na-adjective, noun

unskilled; clumsy; lousy; poor; awkward; shitty

Derogatory term for lack of skill or poor performance; often used in casual, blunt, or self-deprecating speech. Stronger than 下手.

• 彼かれは歌うたが下手へたくそだ。

  He's terrible at singing.