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assert

[uh-surt]
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verb (used with object)
  1. to state with assurance, confidence, or force; state strongly or positively; affirm; aver: He asserted his innocence of the crime.
  2. to maintain or defend (claims, rights, etc.).
  3. to state as having existence; affirm; postulate: to assert a first cause as necessary.
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Idioms
  1. assert oneself, to insist on one's rights, declare one's views forcefully, etc.: The candidate finally asserted himself about property taxes.
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Origin of assert

1595–1605; < Latin assertus joined to, defended, claimed (past participle of asserere), equivalent to as- as- + ser- (see series) + -tus past participle suffix
Related formsas·sert·er, as·ser·tor, nounas·sert·i·ble, adjectivemis·as·sert, verb (used with object)o·ver·as·sert, verb (used with object)pre·as·sert, verb (used with object)re·as·sert, verb (used with object)

Synonyms

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Synonym study

1. See declare. 2. See maintain.

Antonyms

1. deny.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

contendclaimstressprofessupholdaffirmdefendproclaimsaypressargueallegeciteattestpredicateavowvindicateadvanceavouchpronounce

Examples from the Web for assert

Contemporary Examples

Historical Examples

  • They have begun so cruelly with me, that I have not spirit enough to assert my own negative.

    Clarissa, Volume 1 (of 9)

    Samuel Richardson

  • More, he dared believe, and to assert boldly, that she loved him.

    Within the Law

    Marvin Dana

  • It was an insult to the divine powers to assert that they had taken the part of a race horse.

    Thoroughbreds

    W. A. Fraser

  • All admit or assert that the lance is in this warfare the better weapon.

  • But be your resolution what it will, do not by any means repeat to them, that you will not assert your right.

    Clarissa, Volume 2 (of 9)

    Samuel Richardson


British Dictionary definitions for assert

assert

verb (tr)
  1. to insist upon (rights, claims, etc)
  2. (may take a clause as object) to state to be true; declare categorically
  3. to put (oneself) forward in an insistent manner
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Derived Formsasserter or assertor, nounassertible, adjective

Word Origin

C17: from Latin asserere to join to oneself, from serere to join
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 assert

v.

c.1600, "declare," from Latin assertus, past participle of asserere "claim, maintain, affirm" (see assertion). Related: Asserted; asserting. To assert oneself "stand up for one's rights" is recorded from 1879.

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Online Etymology Dictionary, © 2010 Douglas Harper