English

know-it-all

/ˈnəʉ.ɪt.oːl/
Someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.

    Etymology graph

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    Origin

    From know + it + all.

    From Wiktionary, CC BY-SA 4.0.

    Lineage

    • partEnglishall “Every individual or anything of the given class, with no exceptions (the noun or noun phrase denoti…”
      • inheritedMiddle Englishall
        • inheritedOld Englisheall

    Sources