To obtain one's objective by being or appearing stupider or less threatening than one's opponent, exasperating them until they give up.
The border patrol always made sure they never were outsmarted, but by asking disingeneous questions, Juan could usually outdumb them.
by Dennis Phinney February 17, 2006
When you are surrounded by a group of people who all are wrong about something but there's too many of them to bother correcting them all.
I thought about setting those Antifa clowns straight, but I was outdumbered and dared not make a stand.
by 1974Shovel May 29, 2017