ˈflip-flop verb (past tense and past participle flip-flopped, present participle flip-flopping) [intransitive] American English informal
to change your opinion about something
—flip-flop noun [countable]:
an incredible political flip-flop

[TahlilGaran] Dictionary of Contemporary English ▲

flip-flop
[American]
a complete change, especially from one decision or opinion to another.
The government has made a policy flip-flop over arms sales.

[American]
a flip-flop - a complete change, especially from one decision or opinion to another.
The Senator wouldn't dare flip-flop on the abortion issue - he'd lose too many votes.
(often + on)

[TahlilGaran] English Idioms Dictionary ▲

flip flop
flip-flop¹ v., informal To alternate the positions of; exchange the places of; switch.
The football coach had one play in which he flip-flopped his left halfback and fullback.
flip-flop² n., informal A complete change; a switch from one thing to an entirely different one.
John wanted to be a carpenter like his father, but when he saw the print shop he did a flip-flop and now he's learning printing.
flip-flop³ adj. phr., informal Involving or using a change from one of two places, positions, or alternatives to the other.
The machine was controlled by a flip-flop switch.
The football coach hoped to surprise his opponents by using a flip-flop offense.

[TahlilGaran] English Idioms Dictionary ▲