Main Entry: at·test

Pronunciation: \ə-ˈtest\

Function: verb

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

Date: circa 1500

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

synonyms see certify

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

— at·test·er \ə-ˈtes-tər\ noun