flip-flop
• noun
A light, flat sandal typically made of rubber or plastic, held loosely on the foot by a V-shaped strap that passes between the first two toes.
"She packed a pair of rubber flip-flops for walking along the hot sandy beach."
An abrupt reversal of a policy, decision, or opinion, especially by a public figure or politician.
"The candidate's sudden flip-flop on tax reform drew sharp criticism from voters."
An electronic circuit that has two stable states and can be used to store one bit of state information in digital systems.
"In digital logic design, a flip-flop serves as a fundamental building block for sequential memory."
A backward handspring in gymnastics.
"The gymnast executed a series of rapid flip-flops across the floor mat before her final dismount."
• verb
To make an abrupt reversal of opinion, policy, or allegiance; to vacillate repeatedly between opposing positions.
"Critics accused the senator of continuing to flip-flop on key environmental regulations."
To move or flap loosely back and forth, often producing a light slapping sound.
"The caught trout began to flip-flop wildly on the wooden planks of the dock."