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know-all

[ noh-awl ]
/ ˈnoʊˌɔl /
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noun Informal.
a know-it-all.
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Origin of know-all

First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use know-all in a sentence

British Dictionary definitions for know-all

know-all

noun
informal, derogatory a person who pretends or appears to know a great deal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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