憎にくまれ役やく

noun

thankless role; ungracious part

Refers to a role or task that is necessary but brings dislike or criticism, such as the 'bad guy' in a group or the person who must enforce unpopular rules.

• 彼かれはいつも憎にくまれ役やくを引ひき受うける。

  He always takes on the thankless role.

• 会かい議ぎで反はん対たい意い見けんを言いうのは憎にくまれ役やくだ。

  Voicing opposing opinions in meetings is a thankless task.