Proven; shown to be true with evidence. / Supported with testimony. / Certified as good, correct, or pure. / (linguistics) Of words or languages, proven to have existed by records.

simple past tense and past participle of attest

One who attests.

Able to be attested.

In an attestable way.

The property of being attestable.

plural of attestability

plural of attester

Of the nature of attestation.

Attesting; furnishing evidence.