LEARNit Dictionary
attest
verb
/əˈtest/
UK
/əˈtest/
US
1
to show or prove that something is true
شهادت دادن, گواهی کردن, گواهی دادن, تایید کردن, اثبات کردن, تصدیق کردن
synonym
bear/give witness
2
to state that you believe that something is true or what somebody claims it is, for example in court
گواهی دادن, تصدیق کردن, شهادت دادن
to attest a will
The signature was attested by two witnesses.
I can attest that this treatment really works.