Synonyms for certify
Most common
declare verify attest vouch make certain acknowledge endorse
All synonyms
Verb
1. Attest — to attest that a product, service, organization, or person has met an official standard
attest, declare, verify, vouch, vouch for, confirm, witness, prove, approve, validate, ascertain, determine, assure, authenticate, demonstrate, testify, evidence, aver, avow, manifest, avouch, affirm
Other
acknowledge, make certain, endorse, license US, licence UK
Definitions
- v. 1
To attest that a product, service, organization, or person has met an official standard.
These blankets have been certified as fireproof.
Related words
- Word family
- certifiable
Forms
- Past participle
- certified
e.g. certified → attested, declared, verified, vouched…
Choose the right word
Certify is more formal, and applies rather to written documents or legal processes. Assure, certify, inform, apply to the person; affirm, etc., to the thing.
J. C. Fernald, English Synonyms and Antonyms (1914)
Example sentences
- declare I hereby declare the opening of the Olympic Games.
- verify Could you verify that your computer is plugged in?
- attest The fingerprints on the knife attest to her guilt.
- vouch Can anyone vouch for your whereabouts last night?
- acknowledge Could you please acknowledge receipt of this note?
By length
- 4 letters
- aver2, avow2
- 5 letters
- prove1, vouch1
- 6 letters
- assure2, verify3, attest2, affirm2, avouch
- 7 letters
- witness2, license2, confirm2, approve2, declare2, licence2, testify3, endorse2
- 8 letters
- evidence3, manifest3, validate3
- 9 letters
- determine3, ascertain3
- 11 letters
- demonstrate3, acknowledge3
- 12 letters
- authenticate4
The small number after each word is its number of syllables (aver2 = 2 syllables).
In other languages
- Français
- certifier
- Español
- certificar
- Català
- certificar