to put on airs, to stand on ceremony

(literary) to act wisely

(literary) to act like a madman, to act crazy

(informal) to pretend, to do as if

(transitive with avec) to be on a level playing field with, to be on an equal footing with, to be on equal terms with, to keep pace with, to (be able to) compete with

(informal) to make a bad impression, to give a bad impression, to make someone look bad and disreputable

(transitive with à) (informal) to give someone a hard time, to make someone life a misery, to hurt someone, to torment someone

(informal) to score brownie points

(informal) (transitive with à) to have an effect on someone

(informal) to stay long, to stay for long; to stay up late; to party all night, to party until all hours