0 to show something or to say or prove that something is true:
Thousands of people came out onto the streets to attest their support for the democratic opposition party.
The number of old German cars still on the road attests (to) the excellence of their manufacture.
As his career attests, he is a world-class tennis player.
specialized The will needs to be attested (= officially marked to show that the signature of the person who made the will is correct) by three witnesses.
1 (of a person) to state with authority that something is true, or (of a situation or event) to show that something is likely to be true:
2 to sign a document to show that you were present when it was signed by someone else:
3 to say officially that something is true or accurate:
attest to doing sth Couples must attest to being in a committed relationship.
attest to sth The commission demands that Chief Financial Officers personally attest to the accuracy of their financial statements.
4 to show that something is true:
Cases of languages in contact that have replaced this class of items on a wholesale basis are widely attested.
This account might receive further support if the verbs actually attested with habitual do tended to have action nouns based on them.
Many of the patterns visible in prehistoric material either attest structures or else are the cumulative product of countless repetitive and routinised actions.
There should be some plausible linguistic or extralinguistic explanation for the mismatch between the predicted and attested types.
As such, it would tend to be first attested in writing in the more oral and less formal genres.
Both of these patterns are attested in real languages.
These perceptual assimilations, moreover, are attested even in highly proficient bilinguals, and they resist specific training.
That this is not an uncommon situation is attested to by the experience of the first author in a commercial setting.!