Synonyms for confirm
Most common
All synonyms
Verb
1. Verify — to assure the accuracy of previous statements
verify, corroborate, substantiate, affirm, validate, support, prove, ratify, assure, establish, approve, certify, vouch, make good, declare, attest, endorse, authenticate, authorize UK US, authorise UK, witness, sustain, fix
Other
Definitions
- v. 1
To assure the accuracy of previous statements.
Related words
- Word family
- confirmable confirmative confirmability confirmation
Forms
- Past participle
- confirmed
e.g. confirmed → verified, corroborated, substantiated, affirmed…
Choose the right word
Both confirm and corroborate presuppose something already existing to which the confirmation or corroboration is added. The beneficent results of Christianity confirm our faith in it as a divine revelation.
J. C. Fernald, English Synonyms and Antonyms (1914)
Example sentences
- verify Could you verify that your computer is plugged in?
- affirm It's not a therapist's business to affirm a kid's identity.
- corroborate There was no one who could corroborate Sami's alibi.
- substantiate Sami won't be able to substantiate that alibi.
- reassert Algeria needs to reassert its regional authority.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| confirm | rising | |
| verify | rising | |
| affirm | steady | |
| corroborate | steady | |
| substantiate | falling | |
| reassert | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 3 letters
- fix1
- 4 letters
- bind1
- 5 letters
- prove1, vouch1
- 6 letters
- assure2, verify3, clinch1, affirm2, attest2, ratify3
- 7 letters
- support2, witness2, approve2, declare2, sustain2, endorse2, certify3
- 8 letters
- validate3, reassert3
- 9 letters
- establish3, authorize3, authorise
- 10 letters
- strengthen2
- 11 letters
- corroborate4
- 12 letters
- substantiate4, authenticate4
The small number after each word is its number of syllables (assure2 = 2 syllables).
In other languages
- Français
- confirmer
- Italiano
- confermare
- Español
- confirmar
- Deutsch
- bekräftigen
- Català
- confirmar