| responsibility | |
| scan(noun, study, check, review, look) | |
| scrupulousness(noun, vigilance) | |
| secret police | |
| sentinel(noun, case, watch, overlook, guard) | |
| sharp eye | |
| speculation(noun, view, review, look, attention) | |
| spy plane | |
| stalking-horse | |
| strictness(noun, vigilance) | |
| superintendency(direction, management, project, administration) | |
| tail(noun, scrutiny, investigation, following, shadowing) | |
| thoroughness(noun, vigilance) | |
| thoughtfulness(noun, vigilance) | |
| trailing | |
| trap | |
| viewing(noun, view, review, look, attention) | |
| visual examination(noun, expression, view, review, look) | |
| ward(case, watch, guard, bond, freedom) | |
| wariness |
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| APA | Smart Define. (2015). surveillance thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/surveillance/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "surveillance thesaurus" https://smartdefine.org/surveillance/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, surveillance thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/surveillance/thesaurus/synonyms>. |
| MLA | Smart Define. "surveillance thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/surveillance/thesaurus/synonyms> |