assertion

CEFRB2

/əˈsɜːʃən/

noun

Türkçe translations

Translating…

In plain English

01
noun
A confident statement that something is true.
02
noun
Extra detail
A statement or declaration which lacks support or evidence.

Examples

He was correct in his assertion that the minister had been lying.
It is important to note that his assertion is groundless.

At a glance

Sits at B2 on the CEFR scale

Senses: 5
Parts of speech: 1
Citations: 5
Synonyms: 5

Deep Dive

noun

Extra meanings

Something which is asserted; a declaration; a statement asserted.
The act of asserting; positive declaration or averment.
Maintenance; vindication.

More examples

In context

Nobody will believe his assertion that he is innocent.
the assertion of one's rights or prerogatives
That's just a bare assertion.

Quick test

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

His surprising blank that the earth is flat shocked the scientists.

Practise this properly in the app, where the word comes back before you forget it.

Nearby

Citations

The word in print, with each source given in full.

Suppose you are given the semifactual assertion, "even if Nora had liked mathematics then she would have became^([sic]) a scientist" and then you find out that Nora did in fact become a scientist.
2007 January 26, Ruth M. J. Byrne, The Rational Imagination: How People Create Alternatives to Reality, MIT Press, →ISBN, page 140
"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.
1869, Alfred Russel Wallace, The Malay Archipelago, volume II, London: Macmillan and Co., page 247
Drivers' union ASLEF bluntly rebuffed the claim of unofficial action, calling it a lie. And Avanti West Coast was unable to provide any proof for its assertion, when questioned by RAIL.
2022 August 24, Philip Haigh, “Network News: Union slams Avanti West Coast: 'lie' as services slashed”, in RAIL, number 964, page 6
However, that assertion is not backed up by US intelligence, sources told CNN. […] That claim came despite the Trump administration’s repeated assertions that the US had “obliterated” Iran’s nuclear program in military strikes last year.
2026 February 27, Jennifer Hansler, Natasha Bertrand, Kylie Atwood, Zachary Cohen, “Trump has claimed Iran is building missiles that could soon hit the US. Sources say that’s not backed up by US intelligence.”, in CNN, archived from the original on 03 Mar 2026
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.
2006, Srikanth Vijayaraghavan, Meyyappan Ramanathan, A Practical Guide for SystemVerilog Assertions, page 284

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Origin

noun

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

Deep Dive

noun

More examples

Related

Quick test

His surprising blank— that the earth is flat shocked the scientists.

Nearby

Origin

noun

His surprising blank that the earth is flat shocked the scientists.