attest

at·test

verb \ə-ˈtest\

Definition of ATTEST

transitive verb

1

a : to affirm to be true or genuine; specifically : to authenticate by signing as a witness b : to authenticate officially

2

: to establish or verify the usage of

3

: to be proof of : manifest <her record attests her integrity>

4

: to put on oath

intransitive verb

: to bear witness : testify <attest to a belief>

— at·tes·ta·tion \ˌa-ˌtes-ˈtā-shən, ˌa-tə-ˈstā-\ noun

— at·test·er \ə-ˈtes-tər\ noun

Examples of ATTEST

1. I can attest that what he has said is true.
2. The certificate attests the authenticity of the painting.

Origin of ATTEST

Middle French attester, from Latin attestari, from ad- + testis witness — more at testament

First Known Use: circa 1500

Related to ATTEST

Synonyms: certify, authenticate, avouch, testify (to), vouch (for), witness

Antonyms: disprove, rebut, refute

Related Words: guarantee, warrant; affirm, assert, aver, avow, profess, vow

Near Antonyms: contradict, gainsay; deny, disavow, disclaim; challenge, contest, dispute, question

see all synonyms and antonyms

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See Synonym Discussion at certify