乙おつに澄すます

expression, godan verb (-su)

put on airs; act affectedly; assume a superior attitude

Describes someone acting in a refined, aloof, or self-important way, often with a hint of pretentiousness. The phrase carries a slightly critical or mocking tone.

• 彼かの女じょはパーティーで乙おつに澄すましていた。

  She was putting on airs at the party.

• そんなに乙おつに澄すまさなくてもいいじゃないか。

  You don't have to act so superior, do you?