as·​ser·​tion | \ ə-ˈsər-shən How to pronounce assertion (audio) , a-\

Definition of assertion

: the act of asserting or something that is asserted: such as
a : insistent and positive affirming, maintaining, or defending (as of a right or attribute) an assertion of ownership/innocence
b : a declaration that something is the case He presented no evidence to support his assertions.

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Examples of assertion in a Sentence

the assertion that all men have certain unalienable rights is set forth in the Declaration of Independence made the unlikely assertion that gravity affects light

Recent Examples on the Web

Despite such assertions, parents in these cases are often, although not always, charged criminally. Eric D. Lawrence, Detroit Free Press, "Kids are dying in hot cars at an alarming rate; safety agency tweets for awareness," 15 Aug. 2019 Two Democrats who had written to the Defense Department about Spletstoser's assertions, Sens. Karoun Demirjian, Anchorage Daily News, "Two Republican senators split sharply in assessments of general accused of sexual assault," 31 July 2019 Other banks have also conducted similar sessions, a testament to Mr Xi’s assertion of party control over the economy. The Economist, "After three Chinese banks are bailed out, are more at risk?," 4 Sep. 2019 The answer also denied Tennant’s assertion of when the incident occurred and denied that Walton had written a foreword for Tennant’s book. Tania Gangulistaff Writer, Los Angeles Times, "NBA: Insufficient evidence to support Luke Walton sexual assault allegations," 23 Aug. 2019 Finally, Qualcomm challenged the FTC’s assertion that the company is overstating the national security threat to upending its business model. San Diego Union-Tribune, "Qualcomm says FTC is wrong to fight stay of antitrust ruling," 20 June 2019 Rinkeby is not a no-go zone, Mr. Andersson said, an assertion supported by the film’s chief cameraman, who has acknowledged that officers who seemed to suggest otherwise had been edited out of context. Jo Becker, New York Times, "The Global Machine Behind the Rise of Far-Right Nationalism," 10 Aug. 2019 Rosselló said confirmation by both houses was unnecessary for a recess appointment, an assertion that appeared certain to generate legal challenges. Danica Coto, Anchorage Daily News, "Puerto Rico governor resigns as promised; successor sworn in," 3 Aug. 2019 Here’s a look at the context around some of the president’s assertions. Luke Broadwater,, "Fact check: Trump made at least six false claims about Baltimore and the 7th congressional district in a week," 3 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'assertion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of assertion

15th century, in the meaning defined above

History and Etymology for assertion

see assert

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Statistics for assertion

Last Updated

9 Sep 2019

Look-up Popularity

Time Traveler for assertion

The first known use of assertion was in the 15th century

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More Definitions for assertion


as·​ser·​tion | \ ə-ˈsər-shən How to pronounce assertion (audio) \

Kids Definition of assertion

1 : the act of stating clearly and strongly or making others aware the assertion of his innocence
2 : something stated as if certain They did not believe me despite my assertions.

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Comments on assertion

What made you want to look up assertion? Please tell us where you read or heard it (including the quote, if possible).


authorized for issue (as a bond)

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