a person that has grown to
adult size but whose mental capacity and attitude has not matured and developed appropriately. They often get on your nerves strutting around sharing their
annoying irrational muttering and negative attitudes. Their character is tainted by
the clash between their "know it all" stance and the fact that they really can not rationalize ideas & decisions on their own.
My supervisor is a real chidult, I wish he would grow up and get a life.
Please
don't be a chidult, we really need
mature adults on this
team.