noun Informal.

a know-it-all.

Origin of know-all

First recorded in 1880–85 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for know-all

Historical Examples of know-all

  • This time the hunchback, in his favorite character of know-all, took the lead.

    The Duke's Motto

    Justin Huntly McCarthy

  • Come, Mr. Know-All, look upon the prisoner at the bar; do you know him?

  • You find out for yourself, if you're so clever, Mr. Know-all; I'm off.

    Adrien Leroy

    Charles Garvice

  • The place had a know-all air blended with a chaste exclusiveness.

    Married Life

    May Edginton

  • “Some books and things was carted from the office to Denver a-Wednesday,” said the know-all who had spoken about the mortgage.

British Dictionary definitions for know-all



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