assert
Americanverb (used with object)
-
to state with assurance, confidence, or force; state strongly or positively; affirm; aver.
He asserted his innocence of the crime.
- Synonyms:
- maintain, avow, asseverate
- Antonyms:
- deny
-
to maintain or defend (claims, rights, etc.).
-
to state as having existence; affirm; postulate.
to assert a first cause as necessary.
idioms
verb
-
to insist upon (rights, claims, etc)
-
(may take a clause as object) to state to be true; declare categorically
-
to put (oneself) forward in an insistent manner
Related Words
Other Word Forms
Etymology
Origin of assert
First recorded in 1595–1605; from Latin assertus “joined to, defended, claimed,” past participle of asserere “to join to, defend,” from as- as- + serere “to connect” ( cf. series)
Explanation
Asserting is all about standing up for what you believe. You might assert an opinion, your innocence, or even your authority over someone else. The verb assert can be used for both opinions and for oneself. When asked, you can politely assert your desire to go to the amusement park for your birthday. If no one listens to you, you can assert yourself and forcefully state that you really want to go to the amusement park for your birthday. If that fails, you should just take yourself to the amusement park for your birthday. And get better friends.
Vocabulary lists containing assert
The Vocabulary.com Top 1000
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Jim Burke's Academic Vocabulary List
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Words That Could Go Either Way: Synonyms for "Maybe"
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Many of the companies assert that their products are nutritious, and they may be.
From The Wall Street Journal • May 18, 2026
For every person we get out, there are scores in the same facility, with the same rights, and no one to assert them.
From Slate • Apr. 28, 2026
Few performers have turned to the courts to assert their rights.
From Barron's • Apr. 27, 2026
Third parties can also file briefs with the court to assert their own arguments; these are known as “friend of the court” or amicus curiae briefs.
From Salon • Apr. 25, 2026
The one determined to assert her independence and throw her arms around life.
From "The Book of Unknown Americans" by Cristina Henríquez
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
