put on airs

Zaluzhny was already known as an ambitious and modern commander, but also an unpretentious man who liked to joke with his subordinates and didn't put on airs.

Mr. Silvestri, who once waited on Ms. Turner, said she did not put on airs.

Adams, who identifies as two-spirit — the term used by Indigenous communities for those who are nonbinary — did not put on airs.

Sometimes you get intimidated by people because of their intellect, but she never put on airs.

“The Philosophy of Modern Song” is a mouthful, a phrase that puts on airs.