185 entries under expression topic. ×
| keep tabs(verb, mind, notice, spot) | |
| keep under observation | |
| look out(verb, mind, notice, spot) | |
| look out for(verb, idiom, phrasal verb, seek) | |
| look over(verb, phrasal verb, study, consider) | |
| make a reconnaissance | |
| make inquiry(verb, study, consider, examine) | |
| other side(opposition, agent, villain, rebel) | |
| pay attention(verb, mark, see, respect) | |
| pay attention to(verb, idiom, mark, consider) | |
| peek at(see, spot, peek) | |
| plainclothes officer(agent, hound, police, informer) | |
| play the spy | |
| police officer(agent, informer, reporter, investigator) | |
| pore over(verb, consider, see, respect) | |
| private eye(noun, agent, hound, informer) | |
| private investigator(noun, agent, informer, reporter) | |
| put to the test(idiom, study, consider, examine) | |
| put under surveillance | |
| run down(verb, study, consider, examine) |
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| APA | Smart Define. (2016). spy thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/spy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, spy thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/spy/thesaurus/synonyms>. |
| MLA | Smart Define. "spy thesaurus" 10 February 2016. Web. 23 September 2026. <https://smartdefine.org/spy/thesaurus/synonyms> |