slang One who is very uncool, especially by being overly studious or socially awkward. Modeled on "dweeb," which has the same meaning. Don't be such a gweebo! It's Friday night—we should be partying. I can't go to the prom with that gweebo, how embarrassing!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
mod. feeble; despicable; in the manner of a gweeb. I’m not gweebo. I’m just eccentric.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.