The phrase "twists the knife in wound" refers to a situation where someone is deliberately causing more pain to an already hurt person. There are many synonyms that can be used to express this meaning such as rubbing salt in the wound, pouring oil on fire, twisting the dagger and many more. Each of these phrases implies that the person is not only causing more pain but also doing it intentionally to make the other person suffer. It is important to remember that using such phrases in certain situations can be hurtful, and it is best to avoid them if possible.