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
Gus (2)	GUS	Greek
Gislenus	-	Ancient Germanic (Latinized)
Forrest	FAWR-əst	English
Dayna	DAY-nə	English
GusztÁV	-	Hungarian
Davenport	['dævənpɔ:t]