slang Someone who is silly or stupid. Jimmy's such a goofus—of course he's the class clown. Don't trust that goofus with such an important task.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
1. n. a gadget. Where is that little goofus I use to pry open these cans?
2. and goopus n. a foolish oaf. (Also a term of address.) You’re just acting like a goofus. Be serious! Hey, goopus! What’s up?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.