| attestant(noun, witness, proof, testimony, observer) |
| witness(noun, proof, observer, watcher, spectator) |
| attestator |
| spectator(noun, witness, proof, testimony, observer) |
| viewer(noun, witness, proof, testimony, observer) |
| watcher(noun, witness, proof, testimony, observer) |
| attester(noun, witness) |
| beholder(noun, witness, proof, testimony, observer) |
| bystander(noun, witness, proof, testimony, observer) |
| corroborator(noun, witness, proof, testimony, observer) |
| deponent(noun, witness, proof, testimony, observer) |
| eyewitness(noun, witness, proof, testimony, observer) |
| gawker(noun, witness, proof, testimony, observer) |
| informant |
| looker |
| looker-on(noun, witness, proof, testimony, observer) |
| onlooker(noun, witness, proof, testimony, observer) |
| proof(noun, witness, testimony, observer, watcher) |
| rubbernecker(noun, witness, proof, testimony, observer) |
| signatory(noun, witness, proof, testimony, observer) |