Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “attest”


verb [I or T]     /əˈtest/ formal
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 cricketer of world-class standard .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 .Showing and demonstratingProving and disproving
(Definition of attest verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of attest

Definitions of “attest” in other dictionaries

Word of the Day


a situation in which two people are friends

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More