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.

Lord Mandelson also appeared to discuss a tax on bankers' bonuses and confirm an imminent bailout package for the Euro on the day before it was announced in 2010.

From BBC • Apr. 1, 2026

The app is being used to confirm the drinking age of users at supermarkets, book doctors’ appointments and enter museums.

From The Wall Street Journal • Apr. 1, 2026

"Janelia had a one-of-a-kind setup that let us test and confirm what we were seeing."

From Science Daily • Apr. 1, 2026

Researchers found that homeless liaisons often have to cross-check a patchwork of systems to confirm a student’s eligibility and status.

From Los Angeles Times • Apr. 1, 2026

“No. He asked if I could confirm the rumour that a body had been found in the cabin.”

From "Rebecca" by Daphne du Maurier

confirm

Example Sentences

Related Words