verb (formal)
1 ~ (to sth) to show or prove that sth is true:
[V] Contemporary accounts attest to his courage and determination. * She is, as countless stories about her attest, deeply religious. [also Vthat, VN]
2 to state that you believe that sth is true or genuine, for example in a court of law:
[VN] to attest a will * The signature was attested by two witnesses. [also Vthat]
