backflip vs undoing

backflip

• a total reversal in policy or opinion; a volte-face, a U-turn. 

• An act of rotating one's body 360 degrees in the backward direction. 

• To perform a backflip (rotation of body). 

• To completely reverse a policy or opinion; perform a U-turn. 

undoing

• Annulment; reversal 

• Ruin; defeat, (also) that which causes defeat or ruin. 

• The act of loosening or unfastening