attestant
Noun
Meaning
someone who affirms or vouches for the correctness or truth or genuineness of something
(law) a person who attests to the genuineness of a document or signature by adding their own signature
Source: WordNetSynonyms
spectator
witness
eyewitness
bystander
beholder
watcher
viewer
deponent
perceiver
affiant
looker-on
ogler
attestor
witnesser
attester
Show all synonyms