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

And now this assertion is the headline on many major news websites right now, from ABC to CNN to Fox. Brian Stelter, CNN, "Stephanopoulos lands another news-making interview with Trump for ABC," 13 June 2019 Wolff disputed Hoelscher’s assertions, stating that the officials thought about the change for a long time. Elizabeth Zavala,, "City-county magistration feud heats up in San Antonio," 5 June 2019 This assertion of the dead into the sphere of the living is evident throughout the island, but there’s a particular element of Jamaican culture that demonstrates it most powerfully, and that is the foundation of Jamaican music: the soundsystem. Erin Macleod, The New York Review of Books, "Dancehall: Raising the Voices of the Dead," 22 May 2019 And, even if the assertion isn’t true, most Americans don’t pay close enough attention to know what someone was accused of doing and whether the charge was proven or disproved. Chad Pergram, Fox News, "Who wrote the op-ed? Will the government shut down? Denials pile up in Washington," 10 Sep. 2018 Leaving aside the question of whether Maryland’s U.S. senators and representatives should be doing more, the assertion that the state’s delegation is unusually powerful is years out of date. Michael Dresser,, "To err is political: fact-checking the debates of Democratic candidates for Maryland governor," 6 June 2018 The assertion that Cox is aligned with President Donald Trump and the NRA is also correct. Angela Hart, sacbee, "Gavin Newsom's latest ad attacking Republican on gun issue is mostly accurate | The Sacramento Bee," 11 May 2018 Davis, who is working as Paterson's law clerk on this case, said the assertion is absurd. Joe Guillen, Detroit Free Press, "Why Detroit city council president's deposition was abruptly halted," 10 May 2018 The panel has decided to take McGahn to civil court to try to force him to comply with their subpoena, arguing the White House assertion of executive privilege over his testimony doesn't stand up to scrutiny., "Alabama woman agrees to testify in Mueller report probe," 24 June 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

15 Jul 2019

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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

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