136 entries under noun topic. ×
| mole(person, plant, watch, warning) | |
| stool pigeon(expression, idiom, grass, sneak) | |
| eavesdropper(information, agent, sneak, informer) | |
| emissary(person, plant, watch, representative) | |
| foreign agent(expression, person, plant, mole) | |
| intelligence agent(expression, idiom) | |
| mind(mark, consider, see, respect) | |
| note(verb, mark, consider, see) | |
| patrol(verb, person, plant, watch) | |
| sense(verb, see, observe, notice) | |
| spotter(person, plant, watch, guard) | |
| traitor(person, opposition, agent, villain) | |
| assassin(opposition, agent, villain, rebel) | |
| eye(verb, consider, see, respect) | |
| intelligencer(person, plant, mole, sleeper) | |
| observer(person, plant, watch, guard) | |
| picket(person, plant, watch, guard) | |
| shadow(verb, follow, discover, watch) | |
| sleeper(person, plant, mole, infiltrator) | |
| turncoat(grass, decoy, informer, rat) |
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| APA | Smart Define. (2016). spy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/spy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, spy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/spy/thesaurus/synonyms>. |
| MLA | Smart Define. "spy thesaurus" 10 February 2016. Web. 29 September 2026. <https://smartdefine.org/spy/thesaurus/synonyms> |