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Noun: smart cookie
Usage: N. Amer, informal
  1. Someone who has exceptional intellectual ability and originality
    - genius, mastermind, brain, brainiac [N. Amer], Einstein, brainbox [Brit, informal]

Type of: intellect, intellectual

Nearest

smarmily
smarminess
smarmy
smart
smart alec
smart aleck
smart as a whip
smart bomb
smart card
smart casual
smart cookie
smart money
smart phone
smart set
smarta
smart-alecky
smart-arse
smart-ass
smarten
smarten up
smartie