flip-flop UK /ˈflɪpˌflɒp/US /ˈflɪpˌflɑp/noun 8verb 1forms 4 noun8 •(US, UK) A sandal consisting of a rubber sole fastened to the foot by a rubber thong fitting between the toes and around the sides of the foot.the necessity for yet another place at which to buy a polo shirt or a pair of flip-flops may not be apparent to the town's residents — 2004 •A change of places; an inversion or swap.On the break for strong left, everything remains the same, except for the flip-flop of positions. — 1964 •(US) An instance of flip-flopping, of repeatedly changing one's stated opinion about a matter. •A bistable; an electronic switching circuit that has either two stable states (switching between them in response to a trigger) or a stable and an unstable state (switching from one to the other and back again in response to a trigger), and which is thereby capable of serving as one bit of memory.Ten two-state flip-flops […] were formed into ten-stage ring counters representing each decimal digit in the ten-digit accumulators […] — 2012 •A somersault. •The sound of a regular footfall. •(US, slang) A return trip.We'll catch you on the flip-flop. This here's the Rubber Duck on the side. We gone, 'bye, 'bye. — 1975 •(slang, offensive) A person or inhabitant of the Middle East, or a Muslim nation, particularly Afghanistan. verb1 •To alternate back and forth between directly opposite opinions, ideas, or decisions.Trump used to be able to hold the factions together, Taylor said, but these tensions – plus Trump’s flip-flopping about the Epstein files – have collapsed the coalition. — 2026 formsflip-flopped · flip-flopping · flip flops · flip-flops