口くちうるさい

i-adjective

nagging; faultfinding; carping

Describes a person who constantly complains, criticizes, or nags about small things. Often used for someone who is overly picky or hard to please.

• 彼かれは口くちうるさい上じょう司しで、いつも細こまかいことを注ちゅう意いしてくる。

  He is a nagging boss who always points out small things.

• 口くちうるさい客きゃくに何なん度どもやり直なおしをさせられた。

  I was made to redo the work many times by a faultfinding customer.