assertion

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assertion

  • /əˈsɜːʃən/ UK
  • /əˈsɜɹʃən/ US
  • [əˈsɝʃn̩] US

Rhymes with -ɜː(ɹ)ʃən

Where it comes from

From Middle English assercioun, from Latin assertiō. By surface analysis, assert + -ion.

noun assertions

  1. countable, uncountable The act of asserting; positive declaration or averment. "Do tell us the real name of your country, and then when you are gone we shall know how to talk about you." To this luminous argument and remonstrance I could oppose nothing but assertion, and the whole party remained firmly convinced that I was for some reason or other deceiving them.
  2. countable, uncountable Something which is asserted; a declaration; a statement asserted. You're a man of strong assertions!

    Similar: contention

  3. countable, uncountable A statement or declaration which lacks support or evidence. That's just a bare assertion.
  4. countable, uncountable Maintenance; vindication. the assertion of one's rights or prerogatives
  5. countable, uncountable A statement in a program asserting a condition expected to be true at a particular point, used in debugging. The user should be absolutely confident that the error issued is a real design error. In other words, a user should be confident that his assertion code is correct and that the assertion failure is not a false condition.
  6. countable, uncountable The set of information that the statement preparer is providing in a financial statement audit.

Similar: accusation, allegation, censure, charge, crimination, impeachment

Thesaurus

Closest in meaning: asseveration, averment, affirmation, statement, assert, affirm, affirming, confirmation, validation, declaration, attribution, assurance, suggestion, attestation, assumption, reassurance

Translations

Every language

noun affirmation; statement asserted

Españolaserto, aserción, aseveración
한국어단정 danjeong, 주장 jujang
日本語主張 shuchō
中文斷言 /断言 duànyán, 主張 /主张 zhǔzhāng
Portuguêsasserção, assertiva, afirmação
Françaisassertion, confirmation
DeutschVersicherung, Zusicherung, Behauptung, Beteuerung, Erklärung, Vorbringen
Italianoasserzione, affermazione, asserimento, dichiarazione
Românăafirmație
Русскийутвержде́ние utverždénije

noun maintenance; vindication; assertion of one's rights

Françaisaffirmation
DeutschDurchsetzung, Geltendmachung

noun programming: statement asserting a true condition

Españolaserción
日本語アサート asāto
Portuguêsafirmação

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MLA

"assertion." Wiktionary, via Micwyn, micwyn.com/word/assertion. Accessed 6 Nov. 2026.

APA

assertion. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/assertion

Chicago

"assertion." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/assertion.

BibTeX
@misc{assertion_2026,
  title = {assertion},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/assertion},
  urldate = {2026-11-06}
}