certify
- (transitive) To attest to (a fact) as the truth.
- (transitive) To authenticate or verify in writing.
- (transitive) To attest that a product, service, organization, or person has met an official standard.
- (archaic, transitive) To inform; to tell (a person) that something is true.
- (archaic, reflexive) To assure (oneself) of something; to ascertain.
Frequency
Pronounced as (IPA)
/ˈsɜː.tɪ.faɪ/
Etymology
From Old French certefier (“confirm, assure, make certain”). Compare French certifier.
bear witness of
quarantee
bolster up
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