| blab(sneak, informant, squealer) | |
| blabbermouth(grass, sneak, decoy, informer, informant) | |
| blemish | |
| blob | |
| blot | |
| catch(verb, mark, see, note, regard) | |
| check out(verb, expression, study, consider, see) | |
| collaborator(turncoat, traitor, conspirator) | |
| contemplate(verb, mark, consider, see, respect) | |
| delator | |
| denounce | |
| dig(verb, study, mark, consider, see) | |
| enemy(noun, someone, rival, opponent, competitor) | |
| espionage | |
| fairly | |
| fink(agent, grass, sneak, decoy, informer) | |
| flash(verb, mark, consider, see, respect) | |
| fleck | |
| flimsily | |
| gaze at(verb, expression, consider, note, observe) |
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| APA | Smart Define. (2016). spy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/spy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, spy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/spy/thesaurus/synonyms>. |
| MLA | Smart Define. "spy thesaurus" 10 February 2016. Web. 24 September 2026. <https://smartdefine.org/spy/thesaurus/synonyms> |