attest
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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

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