Criticism is a universal feature of human interaction. It appears in workplaces, families, friendships, and intimate relationships. It can be constructive or destructive, helpful or harmful. In healthy relationships, criticism is occasional, specific, and delivered with care. It addresses behavior rather than character. It seeks to solve problems rather than inflict pain. In narcissistic relationships, criticism is none of these things. It is a weapon of control. It is relentless, global, and designed to diminish the partner's sense of worth.

This chapter examines criticism as a tactic of narcissistic devaluation. It explores the difference between constructive criticism and narcissistic criticism. It identifies the various forms that narcissistic criticism takes, from overt insults to subtle undermining. It addresses the psychological impact on the partner, including the erosion of self-esteem and the internalization of the critical voice. It provides a clinically grounded framework for recognizing criticism as abuse and resisting its effects.