The meaning of ASSERTION is the act of asserting or something that is asserted. How to use assertion in a sentence.

ASSERTION definition: 1. a statement that you strongly believe is true: 2. a statement that you strongly believe is…. Learn more.

Assertion definition: a positive statement or declaration, often without support or reason.. See examples of ASSERTION used in a sentence.

assertion (əˈsɜːʃən) n 1. a positive statement, usually made without an attempt at furnishing evidence 2. the act of asserting

2 meanings: 1. a positive statement, usually made without an attempt at furnishing evidence 2. the act of asserting.... Click for more definitions.

Sep 13, 2025 · From Middle French assertion, [1] from Latin assertio. assertion (countable and uncountable, plural assertions) The act of asserting; positive declaration or averment. You're a …

as•ser•tion (ə sûr′ shən), n. a positive statement or declaration, often without support or reason: a mere assertion; an unwarranted assertion. an act of asserting.

An assertion is a declaration that's made emphatically, especially as part of an argument or as if it's to be understood as a statement of fact.

There are five meanings listed in OED's entry for the noun assertion, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Synonyms for ASSERTION: declaration, claim, insistence, allegation, announcement, affirmation, proclamation, argument; Antonyms of ASSERTION: question, dispute, disavowal, disclaimer, …