31 entries under investigation topic. ×

5
surveillance(noun, scrutiny, following, shadowing)
4
shadowing(noun, verb, scrutiny)
3
tailing(noun, verb, scrutiny, shadowing)
2
bugging(bug, scrutiny, monitor, tap)
2
following(bug, scrutiny, monitor, tap)
2
lookout(bug, scrutiny, monitor, tap)
2
observation(scrutiny, shadowing)
2
stakeout(bug, scrutiny, monitor, tap)
2
watch(bug, scrutiny, monitor, tap)
2
wiretap(bug, scrutiny, monitor, tap)
1
body mike(expression, bug, scrutiny, monitor)
1
bug(scrutiny, monitor, tap, shadowing)
1
close observation(expression, bug, scrutiny, monitor)
1
direction(bug, scrutiny, monitor, tap)
1
eagle eye(expression, bug, scrutiny, monitor)
1
examination(bug, scrutiny, monitor, tap)
1
eye(bug, scrutiny, monitor, tap)
1
inspection(bug, scrutiny, monitor, tap)
1
peeled eye(expression, bug, scrutiny, monitor)
1
scrutiny(bug, monitor, tap, shadowing)
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APASmart Define. (2015). spying thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/spying/thesaurus/synonyms
ChicagoSmart Define. 2015. "spying thesaurus" https://smartdefine.org/spying/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, spying thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/spying/thesaurus/synonyms>.
MLASmart Define. "spying thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/spying/thesaurus/synonyms>