Is there someone in your life who consistently makes you feel like you are on an emotional roller coaster? Do you know a person who is friendly one day but sulks and withdraws the next? Does a family member or friend consistently procrastinate, postpone, stall, and shut down any emotionally-laden conversations? Are you sometimes that person? If you answered "yes" to any of these questions, chances are you may be interacting with a passive aggressive person or showing signs of passive-aggressive behavior yourself.

In The Angry Smile: The Psychology of Passive Aggressive Behavior in Families, Schools, and Workplaces, 2nd ed., passive aggression is defined as a deliberate and masked way of expressing covert feelings of anger (Long, Long & Whitson, 2008). It involves a range of behaviors designed to get back at another person without him recognizing the underlying anger. These 10 common passive aggressive phrases can serve as an early-warning system for you, helping you recognize hidden hostility when it is being directed your way:

1. "I'm not mad."

Denying feelings of anger is classic passive aggressive behavior. Rather than being upfront and honest when questioned about his feelings, the passive aggressive person insists, "I'm not mad" even when he is seething on the inside. ...[Continue reading on Psychology Today]