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definitions

everyone

[ev-ree-wuhn, -wuh n]
pronoun
  1. every person; everybody.

Origin of everyone

First recorded in 1175–1225, everyone is from the Middle English word everichon. See every, one

Usage note

See each.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for everyone's

everyone

pronoun
  1. every person; everybody

usage

Everyone and everybody are interchangeable, as are no one and nobody, and someone and somebody. Care should be taken to distinguish between everyone and someone as single words and every one and some one as two words, the latter form correctly being used to refer to each individual person or thing in a particular group: every one of them is wrong
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
Word Origin and History for everyone's

everyone

n.

c.1200, from every + one.

Online Etymology Dictionary, © 2010 Douglas Harper
Idioms and Phrases with everyone's

everyone

see entries under every man.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.