Attest Definition & Meaning | Britannica Dictionary (original) (raw)

Britannica Dictionary definition of ATTEST

formal

:

to show, prove, or state that something is true or real

[no object]

— usually + to

• I can attest to the truth of his statement.
• The popularity of the treatment attests to its effectiveness. [=shows that it is effective]

[+ object]

• I can attest that what he has said is true.
• The certificate attests the authenticity of the painting.
• He was asked to attest [=_authenticate_] the will/signature.

— often used as (be) attested

• The plant's presence in the ancient world is attested by fossils that have been found.
• the first attested written language

— attestation

/ˌæˌtɛsˈteɪʃən/

noun,

plural

attestations

[count]

• the first attestations of written language

[noncount]

• The signature required attestation.