to twist the knife twist the knife in sb's wound/turn the knife in sb's wound
or twist the knife in sb's wound/turn the knife in sb's wound
phraseIf you twist the knife or if you turn the knife in someone's wound, you do or say something to make an unpleasant situation they are in even more unpleasant.
Travis twisted the knife by laughing at her.
It is the turn of Latvia to twist the knife.
See full dictionary entry for knife