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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.

You should also watch out for companies asking for your student-loan password or verification code so they can confirm your information.

From MarketWatch • Apr. 30, 2026

"I can also confirm that consideration of restrictions such as curfews will be in addition not instead of this."

From BBC • Apr. 28, 2026

In response, the State Department official wrote: “I confirm that State has no foreign policy concerns with ending these TPS designations.”

From Los Angeles Times • Apr. 28, 2026

Larger studies will help confirm how effective the supplement is and clarify how it influences chemotherapy response.

From Science Daily • Apr. 28, 2026

“I have to confirm that’s a resident here. I don’t recognize the name.”

From "Night Owls" by A.R. Vishny

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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