Definitions for know-it-all

This page provides all possible meanings and translations of the word know-it-all

Random House Webster's College Dictionary


  1. a person who acts as though he or she had better knowledge or understanding than anyone else.

Origin of know-it-all:


Princeton's WordNet

  1. know-it-all, know-all(noun)

    someone who thinks he knows everything and refuses to accept advice or information from others

Kernerman English Learner's Dictionary

  1. know-it-all(noun)ˈnoʊ ɪŋ

    sb who thinks they know everything

    You're such a know-it-all.


  1. know-it-all(Noun)

    Someone who obnoxiously claims to be knowledgeable on a subject.

    We had it all figured out, but this know-it-all marched in with "the correct way of solving it", leaving our experiment in shambles.


  1. Know-it-all

    A know-it-all or know-all is a person who obnoxiously purports an expansive comprehension of a topic and/or situation when in reality, his/her comprehension is inaccurate or limited. This display may or may not be directly expressed. The German word Besserwisser is also used in some languages, literally meaning "better knowing [person]".


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