Passive-Aggressiveness in Narcissists Passive-aggressive behaviour is a hallmark of covert narcissism. Rather than expressing anger directly, narcissists mask it with subtle digs, sarcasm, or the silent treatment. This leaves you feeling uneasy, guilty, or as though you’ve done something wrong—while they never openly address the issue. Common ways narcissists use passive-aggressiveness include: The Silent Treatment – Withholding communication to punish or regain control. Backhanded Compliments –