a/one smart cookie

smart cookie

A clever and intelligent person. Don't underestimate Cindy's intelligence—she's one smart cookie!
See also: cookie, smart
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

a smart cookie

If someone is a smart cookie, they are clever and have good ideas. Anyone who made billions in the Russian oil industry is clearly a smart cookie. Helen's a pretty smart cookie — I trust her.
See also: cookie, smart
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

a/one smart ˈcookie

(American English, informal) a clever person with good ideas: Jed is one smart cookie. I’m sure he’ll do the right thing.
See also: cookie, one, smart
Farlex Partner Idioms Dictionary © Farlex 2017

smart cookie

n. a clever person. She’s really a smart cookie if you give her a chance.
See also: cookie, smart
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
See also: