a smarty pants

(informal)

someone who is always trying to seem more clever than everyone else in a way that is annoying Cindy, the little smarty pants, will be the first to tell us where we went wrong.

Common Names:

Name	Pronounced	Usage
Erfan	-	Persian
Paaie	-	Manx
Zlata	-	Croatian, Serbian, Slovene, Macedonian, Czech, Slovak, Russian
Forest	FAWR-əst	English
Sybille	see-BI-lə (German)	German, French
CÔNg	-	Vietnamese