› 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.
Thesaurus: synonyms and related words
You can also find related words, phrases, and synonyms in the topics: