attestator

Từ điển WordNet v3.1 - WordNet Dictionary

noun

(law) a person who attests to the genuineness of a document or signature by adding their own signature
• Syn:
witness, attestant, attestor
• Derivationally related forms:
attest (for: attestant), witness (for: witness)
• Topics:
law, jurisprudence
• Hypernyms:
signer, signatory