attest


at·test

verb \ə-ˈtest\

: to show, prove, or state that something is true or real

Full 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

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