airbrain

airhead

A dim-witted, useless, or unintelligent person. I can't believe I got paired with such an airhead for this assignment. He's not going to get any work done at all!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

airhead

and airbrain
n. a stupid person. (Someone with air where there should be brains.) Some airbrain put mustard in the ketchup dispenser. Bart seems like such an airhead, but he’s all heart.

airbrain

verb
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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