If you've ever had to grit your teeth during rush hour traffic or hold your tongue in a work meeting, you know just how pervasive feelings of aggression can be. We've all been there. Anger is one of ...

Passive-aggressive people rarely tell you exactly what’s bothering them. Instead, their frustration slips out in subtle ways: a backhanded joke, a heavy sigh, an uncharacteristically curt text—all of ...