主しゅ人じん顔がお

noun

proprietary air; acting like the owner

Describes someone behaving as if they own the place or are in charge, often with an air of self-importance. Used in phrases like 主人顔をする or 主人顔で振る舞う.

• 彼かれは新しん入いりなのに、もう主しゅ人じん顔がおで指し示じを出だしている。

  Even though he's a newcomer, he's already giving orders as if he owns the place.