Question

hit one where it hurts most By questioning his skills, Gina hit Kim where it hurt most.

Accepted Answer

This idiom means to attack one in the area is most vulnerable or that will result in the most harm.

Phrase/Idiom	hit one where it hurts most
Definition	This idiom means to attack one in the area is most vulnerable or that will result in the most harm.
Example	By questioning his skills, Gina hit Kim where it hurt most.

Hit Hurts Idiom Means Attack Area Vulnerable Result