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English definition of “smarty-pants”

smarty-pants

noun [C] uk   /ˈsmɑː.ti.pænts/ us    /ˈsmɑːr.t̬i-/ (plural smarty-pants) informal
someone who wants to appear to be clever: [as form of address] Okay, smarty-pants, you tell me how to do it then.Showing arrogance and conceitConfidence and self-assuranceBoasting
(Definition of smarty-pants from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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