- Definitions|2
- Thesaurus|823
- Abbreviations|0
123 entries under noun topic. ×
| scrutator(person, search, first) | |
| secret agent(expression, plant, agent, operative) | |
| secret service(expression, plant, agent, operative) | |
| shepherd(keeper, herdsman) | |
| sightseer | |
| signatory(witness, proof, testimony, observer) | |
| signer(witness, proof, testimony, observer) | |
| sleeper(plant, agent, operative, informer) | |
| sleuth(plant, agent, operative, informer) | |
| snoop(plant, agent, operative, informer) | |
| spier | |
| spook(plant, agent, operative, informer) | |
| starer | |
| studier | |
| tail(informal, investigate) | |
| testifier(witness, proof, testimony, observer) | |
| testimony(witness, proof, observer, spectator) | |
| tracer(person, search, first) | |
| undercover agent(expression, plant, agent, operative) | |
| visitor |
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| APA | Smart Define. (2015). watcher thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/watcher/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "watcher thesaurus" https://smartdefine.org/watcher/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, watcher thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/watcher/thesaurus/synonyms>. |
| MLA | Smart Define. "watcher thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/watcher/thesaurus/synonyms> |