flip-flop

(noun) a decision to reverse an earlier decision. Synonyms: reversal, change of mind, turnabout, turnaround.

(noun) a backless sandal held to the foot by a thong between the big toe and the second toe. Synonyms: thong.

(noun) an electronic circuit that can assume either of two stable states.

(noun) a backward somersault.

(verb) reverse (a direction, attitude, or course of action). Synonyms: interchange, tack, switch, alternate, flip.