attestant

attestator attestor deponent testifier

corroborator

affiant attester attestor deposer testifier

attester attestor beholder bystander deponent eyewitness gawker looker-on observer onlooker proof rubbernecker signatory signer spectator testimony viewer watcher

corroborator

participant

observer onlooker spectator watcher

attestor beholder bystander deponent eyewitness gawker looker-on proof rubbernecker seer signatory signer testifier testimony

corroborator

participant

bystander eyewitness observer spectator testimony

attestor beholder deponent gawker looker-on onlooker proof rubbernecker signatory signer testifier viewer watcher

corroborator

participant