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OATknow-all

know-all

Flag: gbEnglishOxford American Thesaurus

know-all
noun
informal derogatory
you're such a know-all—you tell me!:
informal smart aleck, wise guy, smarty, smarty-pants;
British, informal clever clogs, clever Dick, smarty-boots, smart-arse;
North American, informal know-it-all, smart-ass;
archaic wiseacre.