20 entries under observer topic. ×

18
spectator(noun, person, see, awareness, witness)
14
onlooker(noun, person, see, awareness, witness)
13
eyewitness(noun, person, witness, fan, testimony)
13
watcher(noun, person, see, awareness, witness)
13
witness(noun, person, proof, fan)
11
viewer(noun, person, witness, fan, slouch)
9
looker-on(noun, person, see, awareness, witness)
8
beholder(noun, see, awareness, witness, fan)
3
testifier(noun, witness, proof, testimony)
2
attestant(noun, witness, proof, testimony)
2
attestor(noun, witness, proof, testimony)
2
deponent(noun, witness, proof, testimony)
1
corroborator(noun, witness, proof, testimony)
1
fan(noun, watcher, viewer)
1
gawker(noun, witness, proof, testimony)
1
proof(noun, witness, testimony, watcher)
1
rubbernecker(noun, witness, proof, testimony)
1
signatory(noun, witness, proof, testimony)
1
signer(noun, witness, proof, testimony)
1
testimony(noun, witness, proof, watcher)
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APASmart Define. (2016). bystander thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/bystander/thesaurus/synonyms
ChicagoSmart Define. 2016. "bystander thesaurus" https://smartdefine.org/bystander/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, bystander thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/bystander/thesaurus/synonyms>.
MLASmart Define. "bystander thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/bystander/thesaurus/synonyms>