1. attest - Noun
2. attest - Verb
To bear witness to; to certify; to affirm to be true or genuine; as, to attest the truth of a writing, a copy of record.
To give proof of; to manifest; as, the ruins of Palmyra attest its ancient magnificence.
To call to witness; to invoke.
Witness; testimony; attestation.
Source: Webster's dictionaryI actually was class clown, but I don't know how that happened because I've never been considered an outwardly funny person-as the people in this room will attest. Janeane Garofalo
In this outward and physical ceremony we attest once again to the inner and spiritual strength of our Nation. As my high school teacher, Miss Julia Coleman, used to say: 'We must adjust to changing times and still hold to unchanging principles.' Jimmy Carter
As one who has often felt this need, and who has found refreshment in wild places, I attest to the recreational value of wilderness. George Aiken
There are many men now living who were in the habit of using the age-old expression: 'It is as impossible as flying.' The discoveries in physical science, the triumphs in invention, attest the value of the process of trial and error. In large measure, these advances have been due to experimentation. Louis Brandeis
The public prosecutor ... should be subject to regular examinations to attest to sanity. Silvio Berlusconi
It is deeply shocking and incomprehensible to me that despite volumes of documentation and living witnesses who can attest to the horrors of the Holocaust, there are still those who would deny it. Mark Udall