know-it-all

as in know-all
informal + disapproving a person who talks and behaves like someone who knows everything My neighbor is a real know-it-all, always telling me what to do.

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Cite this Entry

“Know-it-all.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/know-it-all. Accessed 29 May. 2024.

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