Synonyms of assert

assert

verb

ə-ˈsərt 

1

as in to declare

to state clearly and strongly

a superpatriot who is never afraid to assert her allegiance to flag and country

Synonyms & Similar Words

• declare
• affirm
• proclaim
• profess
• say
• announce
• guarantee
• explain
• aver
• justify
• defend
• avow
• lay down
• promote
• emphasize
• pronounce
• advertise
• avouch
• convince
• assure
• uphold
• publicize
• advocate
• persuade
• underscore
• reassert
• underline
• stress
• advance
• accent
• reaffirm
• boost
• accentuate
• espouse
• rationalize
• support
• call
• plug
• blaze
• champion

Antonyms & Near Antonyms

• minimize
• ignore
• disregard
• understate
• overlook
• neglect

2

as in to argue

to state (something) as a reason in support of or against something under consideration

asserted that a new roof would be necessary if the church was to remain open

Synonyms & Similar Words

• argue
• contend
• reason
• plead
• maintain
• insist
• convince
• justify
• claim
• explain
• mention
• suggest
• persuade
• affirm
• cite
• consider
• defend
• enforce
• propose
• submit
• adduce
• urge
• advise
• offer
• discuss
• advocate
• recommend
• refute
• counsel
• avow
• give
• aver
• disprove
• rationalize
• rebut
• counter
• advance
• support
• avouch
• espouse
• debate
• champion
• confute

3

as in to insist

to state as a fact usually forcefully

vigorously asserted that what passes for art these days is absolute rubbish

Synonyms & Similar Words

• insist
• claim
• allege
• declare
• contend
• maintain
• affirm
• argue
• proclaim
• announce
• protest
• profess
• purport
• aver
• defend
• confirm
• avow
• put forth
• warrant
• avouch
• justify
• reason
• vindicate
• rationalize
• reassert
• reaffirm
• broadcast
• uphold
• persevere
• support

Antonyms & Near Antonyms

• deny
• abandon
• reject
• repudiate
• negate
• negative
• disclaim
• gainsay
• challenge
• refute
• dispute
• question
• disprove
• rebut
• disavow
• contradict
• disown
• counter
• confute

Synonym Chooser

How is the word assert distinct from other similar verbs?

Some common synonyms of assert are affirm, avow, declare, and protest. While all these words mean "to state positively usually in anticipation of denial or objection," assert implies stating confidently without need for proof or regard for evidence.

asserted that modern music is just noise

When could affirm be used to replace assert?

The words affirm and assert can be used in similar contexts, but affirm implies conviction based on evidence, experience, or faith.

affirmed the existence of an afterlife

When might avow be a better fit than assert?

The synonyms avow and assert are sometimes interchangeable, but avow stresses frank declaration and acknowledgment of personal responsibility for what is declared.

avowed that all investors would be repaid in full

In what contexts can declare take the place of assert?

While in some cases nearly identical to assert, declare stresses open or public statement.

declared her support for the candidate

When is it sensible to use protest instead of assert?

While the synonyms protest and assert are close in meaning, protest emphasizes affirming in the face of denial or doubt.

protested that he really had been misquoted

Example Sentences

Recent Examples of assert

The lawsuit asserts that Optum owns and operates SCA Health, a national chain of surgery centers that employed Gaw and operates the Outpatient Surgery Center of La Jolla. —Alex Riggins, San Diego Union-Tribune, 20 June 2025

At the time, the Trump administration asserted that Soleimani was directing an imminent attack against U.S. assets in the region, but officials have not provided clear evidence to support that claim. —Jeffrey Fields, The Conversation, 18 June 2025

That hasn’t sat well with Trump, who has continued his call for lower interest rates, asserting there is no inflation. —Rob Wile, NBC news, 18 June 2025

The Biden Department of Education’s fact sheet—which was not a law or a regulation promulgated through agency rule-making—asserted colleges paying athletes for use of their NIL ought to count as athletic financial assistance within the meaning of Title IX. —Michael McCann, Sportico.com, 9 June 2025