Flip-flop
Part of speech: verb
Definition: To alternate back and forth between directly opposite opinions, ideas, or decisions.
Part of speech: noun
Definition: An item of footwear, usually of rubber, secured by two straps mounted between the big toe and its neighbour. An instance of flip-flopping, of repeatedly changing one's stated opinion about a matter. An electronic circuit (a bistable multivibrator) that has two stable states and is thereby capable of serving as one bit of memory.
Reversal
Part of speech: noun
Definition: The state of being reversed.An instance of reversing.A change in fortune; a change from being successful to having problems.
Example sentence: Trump has moved campaigns into a post-advertising era with a total reversal of spend from paid to earned media.