An adjective used to describe a person who acts like a retard but for the purpose to make others feel creeped out. Usually, the person described will be sick minded.
Person 1: That guy is so scary! He pulled a pedophile face at me!
Person 2: Oh yeah, he's a creeptard.
Person 2: Oh yeah, he's a creeptard.
by ExplodingSheepiesYay June 04, 2015