Synonyms & Antonyms of confirm

1 to give evidence or testimony to the truth or factualness of
  • several eyewitnesses who can confirm the defendant's account of what happened

Synonyms for confirm

Words Related to confirm

Near Antonyms for confirm

Antonyms for confirm

2 to give official acceptance of as satisfactory
  • the senate must confirm an appointment to an ambassadorship

Synonyms for confirm

Words Related to confirm

Near Antonyms for confirm

Antonyms for confirm

See the Dictionary Definition 

Frequently Asked Questions About confirm

How does the verb confirm contrast with its synonyms?

Some common synonyms of confirm are authenticate, corroborate, substantiate, validate, and verify. While all these words mean "to attest to the truth or validity of something," confirm implies the removing of doubts by an authoritative statement or indisputable fact.

confirmed the reports

When is authenticate a more appropriate choice than confirm?

While the synonyms authenticate and confirm are close in meaning, authenticate implies establishing genuineness by adducing legal or official documents or expert opinion.

handwriting experts authenticated the diaries

When is it sensible to use corroborate instead of confirm?

While in some cases nearly identical to confirm, corroborate suggests the strengthening of what is already partly established.

witnesses corroborated his story

When could substantiate be used to replace confirm?

The synonyms substantiate and confirm are sometimes interchangeable, but substantiate implies the offering of evidence that sustains the contention.

the claims have yet to be substantiated

In what contexts can validate take the place of confirm?

The meanings of validate and confirm largely overlap; however, validate implies establishing validity by authoritative affirmation or by factual proof.

validated the hypothesis by experiments

When would verify be a good substitute for confirm?

In some situations, the words verify and confirm are roughly equivalent. However, verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at.

all statements of fact in the article have been verified

Keep scrolling for more

Learn More About confirm

Time Traveler for confirm

Time Traveler

The first known use of confirm was in the 13th century

See more words from the same century

Thesaurus Entries Near confirm




See More Nearby Entries 

Cite this Entry

“Confirm.” Thesaurus, Merriam-Webster, Accessed 17 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on confirm

Nglish: Translation of confirm for Spanish Speakers

Britannica English: Translation of confirm for Arabic Speakers


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!