plural of flip side

(derogatory) A person, especially a politician, who changes his or her opinion.

simple past tense and past participle of flip-flop

A large pad, usually supported on a stand, used for (typically handwritten) presentations.

(colloquial, idiomatic) To make a rude or obscene gesture (at somebody); particularly, to extend the middle finger. / Used other than figuratively or idiomatically: see flip, bird.

(informal, transitive) To make a rude or obscene gesture at someone.

(US, slang, vulgar) To make a rapid and illegal U-turn.

(US) An instance of flip-flopping, of repeatedly changing one's stated opinion about a matter.

To alternate back and forth between directly opposite opinions, ideas, or decisions.

(tenpin bowling) A bowl where the ball skids a long way before it starts to roll.