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oneself

[wuhn-self, wuhnz-]
See more synonyms on Thesaurus.com
pronoun
  1. a person's self (used for emphasis or reflexively): One often hurts oneself accidentally.
Idioms
  1. be oneself,
    1. to be in one's normal state of mind or physical condition.
    2. to be unaffected and sincere: One makes more friends by being oneself than by putting on airs.
  2. by oneself,
    1. without a companion; alone.
    2. through one's own efforts; unaided: to become a millionaire by oneself.
  3. come to oneself,
    1. Also come to.to regain consciousness.
    2. to regain one's self-possession; come to one's senses.
    Also come to one's self.
Also Archaic, one's self.

Origin of oneself

First recorded in 1540–50; shortened form of one's self
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for be oneself

oneself

pronoun
    1. the reflexive form of one (def. 20), one (def. 21)
    2. (intensifier)one doesn't do that oneself
  1. (preceded by a copula) one's normal or usual selfone doesn't feel oneself after such an experience
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 be oneself

oneself

1540s, one's self. Hyphenated 18c.; written as one word from c.1827, on model of himself, itself, etc.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with be oneself

be oneself

1

Act in one's usual fashion; be in one's normal physical or mental state. For example, Peter's finally recovered from the accident and is himself again, or I was completely distracted; I just wasn't myself.

2

Act without pretense; be unaffected, sincere. For example, I really enjoy their company because I can be myself with them.

oneself

see avail (oneself) of; be oneself; beside oneself; burn (oneself) out; by oneself; cover one's ass (oneself); crank (oneself) up; do oneself in; excuse me (oneself); exert oneself; explain oneself; express oneself; fall all over (oneself); feel like oneself; find oneself; flatter oneself; fling oneself at; forget oneself; full of oneself; get a grip on (oneself); give a good account of oneself; give of oneself; give (oneself) away; give oneself up; have oneself; hear oneself think; help oneself; keep to oneself; kick oneself; knock oneself out; law unto oneself; lay (oneself) open; leave (oneself) open; let (oneself) go; live with (oneself); lose oneself in; make a laughingstock of oneself; make a name for oneself; make an exhibition of oneself; make a nuisance of oneself; make a pig of oneself; make oneself at home; make oneself scarce; not oneself; paint oneself into a corner; plume oneself; pride oneself on; pull oneself together; pull oneself up; put oneself out; relieve oneself; repeat oneself; shift for oneself; shoot oneself in the foot; spread oneself too thin; suit oneself; sure of oneself; take it upon oneself; throw oneself at; tie oneself in knots; trouble one's head (oneself) about.

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