Dictionary
know–it–all
noun \ˈnō-ət-ˌȯl\
: a person who talks and behaves like someone who knows everything
Full Definition of KNOW-IT-ALL
: one who claims to know everything; also : one who disdains advice
— know–it–all adjective
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First Known Use of KNOW-IT-ALL
1895
KNOW-IT-ALL Defined for Kids
know–it–all
noun \ˈnō-ət-ˌȯl\
Definition of KNOW-IT-ALL for Kids
: a person who always claims to know everything
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