Cop out and Flip-flop

Cop out verb - To break a promise or agreement.

Flip-flop and cop out are semantically related. In some cases you can use "Flip-flop" instead a verb "Cop out".

Flip-flop verb - Reverse (a direction, attitude, or course of action).

Cop out and flip-flop are semantically related. Sometimes you can use "Cop out" instead a verb phrase "Flip-flop".