31 entries under investigation topic. ×

10
bug(noun, verb, study, consider, examine)
9
tap(noun, verb, study, consider, examine)
4
surveillance(noun, scrutiny, following, shadowing)
3
following(noun, adjective, bug, scrutiny)
3
observation(noun, scrutiny, shadowing)
3
stakeout(noun, bug, scrutiny, monitor)
3
tailing(verb, scrutiny, shadowing)
2
bugging(noun, bug, scrutiny, monitor)
2
shadowing
2
spying(noun, bug, scrutiny, monitor)
1
body mike(noun, expression, bug, monitor)
1
care(noun, bug, scrutiny, monitor)
1
close observation(noun, expression, bug, monitor)
1
control(noun, bug, scrutiny, monitor)
1
direction(noun, bug, scrutiny, monitor)
1
eagle eye(noun, expression, bug, monitor)
1
examination(noun, bug, scrutiny, monitor)
1
eye(noun, bug, scrutiny, monitor)
1
inspection(noun, bug, scrutiny, monitor)
1
lookout(noun, bug, scrutiny, monitor)
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APASmart Define. (2015). wiretap thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/wiretap/thesaurus/synonyms
ChicagoSmart Define. 2015. "wiretap thesaurus" https://smartdefine.org/wiretap/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, wiretap thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/wiretap/thesaurus/synonyms>.
MLASmart Define. "wiretap thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/wiretap/thesaurus/synonyms>