to annoy greatly, often after the person or animal become very perturbed, it may lash out and attack.
Bootsy becomes very perturbed when you poke him stomach.
by Ashley July 31, 2003
The Best/only way to express that you are Pissed off in front of your parents
mom when you say i have issues i get really pi...perturbed
by Courtney D. June 02, 2005