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Definitions

confirm

[kuhn-furm] / kənˈfɜrm /
VERB
ratify, validate, prove
Synonyms
STRONGEST
affirm approve back certify corroborate endorse establish explain sign substantiate support uphold verify
STRONG
attest authenticate bless buy check circumstantiate debunk double-check justify okay sanction settle subscribe underpin vouch warrant witness
WEAK
bear out check out give green light give high sign give stamp of approval give the go-ahead give the nod lap up make good make sure rubber-stamp sign off on size up thumbs-up
Antonyms
STRONGEST
confuse contradict deny disallow disapprove discredit disprove invalidate oppose refuse reject
STRONG
disagree refute veto
WEAK
annul cancel destroy repudiate void
VERB
reinforce
Synonyms
STRONGEST
assure establish
STRONG
buttress clinch fix fortify invigorate settle strengthen
WEAK
make firm
Antonyms
STRONG
discourage dishearten dissuade hurt unsettle weaken
WEAK
annul cancel contradict deny destroy disprove invalidate oppose repudiate veto void

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.

On her third visit, as Crain’s condition deteriorated, a doctor did not send Crain to the intensive care unit until he could confirm fetal demise with two ultrasounds.

From Salon • Apr. 20, 2026

Late last year, Tinder began requiring all users to submit a video selfie in order to confirm they were real people.

From BBC • Apr. 17, 2026

Nieva emphasized that more research is needed to confirm any link between pesticide exposure and lung cancer in younger people, especially women.

From Science Daily • Apr. 17, 2026

Data from the American Association of Individual Investors seems to confirm that view, with the latest reading from April 15 showing 68.3% of respondents remaining “neutral or bearish” on stocks over the next six months.

From Barron's • Apr. 17, 2026

It hooted again as if to confirm Magdalys’s thought.

From "Dactyl Hill Squad" by Daniel José Older

Vocabulary lists containing confirm

Jim Burke's Academic Vocabulary List

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The SAT: Language of the Test, List 3

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The Language of Standardized Tests, List 2

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