Pronunciation- DREE-ther: A child or kid who has not yet hit puberty that is annoying, stupid, or lazy; it can be used as an insult for anyone. It is equal in insultingness to calling someone a dumbass.
The verb form is "Dreathing"
Did you see that dreather over there? That kid thought that two times two is eight!
Friend 1: "Can you believe that Justin Bieber walked into a door the other day?"
Friend 2: "I know, that kid is such a dreather"