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1. A decision to reverse an earlier decision
   - reversal, change of mind, turnabout [N. Amer], turnaround, U-turn [informal]
    
2. A backless sandal held to the foot by a thong between the big toe and the second toe
   - thong [N. Amer, Austral], jandal [NZ]
    
3. An electronic circuit that can assume either of two stable states
   - bistable
    
4. A backward somersault

1. Reverse (a direction, attitude, or course of action)
   - interchange, tack, switch, alternate, flip

Derived forms: flip-flopped, flip-flopping, flip-flops

Type of: change by reversal, circuit, deciding, decision making, electric circuit, electrical circuit, flip, reverse, sandal, somersault, somersaulting, somerset [dialect], summersault [archaic], turn

Encyclopedia: Flip-flop