Amy Jen Su and Muriel Maignan Wilkins use HBR.org's blog to offer advice on dealing with passive-aggressive peers in the workplace.
They use the following example to describe the paradoxical term "passive aggression", which they say is all too often loosely used to describe co-workers:
"You're at the weekly team meeting. Everyone around the table vigorously nods their heads and agrees to a series of action steps. Meeting ends.