Provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes:
— His high fever attested to his illness.
Roget 768: promise; give a promise etc. n.; undertake, engage; make an engagement, form an engagement; enter into an engagement, enter on an engagement; bind oneself, tie oneself, pledge oneself, commit oneself, ... meer laten zien
Nederlands: betogen, demonstreren, manifesteren
Authenticate, affirm to be true, genuine, or correct, as in an official capacity.
Give testimony in a court of law.
Establish or verify the usage of.
Moby betekeniswoordenboek: acknowledge, affirm, allege, and candle, announce, approve, argue, assert, assert under oath, asseverate, assure, authenticate, aver, avouch, avow, back, back up, be sponsor for, bear out, bear witness ... meer laten zien.
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