flip-flop

noun

• 1a light sandal, typically of plastic or rubber, with a thong between the big and second toe.

• 2North American a backward handspring.
• informal an abrupt reversal of policy:his flip-flop on taxes

• 3 Electronics a switching circuit which works by changing from one stable state to another, or through an unstable state back to its stable state, in response to a triggering pulse.

verb

• 1 [with adverbial of direction] move with a flapping sound or motion:she flip-flopped off the porch in battered trainers

• 2North American informal make an abrupt reversal of policy:the candidate flip-flopped on a number of issues