change_by_reversal
1. [ verb ] change to the contrary
Synonyms: turn reverse
Examples:

"The trend was reversed" "the tides turned against him" "public opinion turned when it was revealed that the president had an affair with a White House intern"

Related terms: change correct revert switch_over undo permute metamorphose turn_the_tables commutate falsify desecrate desynchronize undo interchange switch_on switch_off disgust reverse turning