smart cookie

A clever and intelligent person. Don't underestimate Cindy's intelligence—she's one smart cookie!

n. a clever person. She’s really a smart cookie if you give her a chance.

Name	Pronounced	Usage
Dianna	die-AN-ə	English
Delaney	də-LAYN-ee	English (Modern)
Volos	-	Slavic Mythology
Slobodan	-	Serbian, Macedonian, Croatian
Roni (1)	-	Hebrew
Rosannah	ro-ZAN-ə	English (Rare)