338 entries under noun topic. ×

3
hunt(search, examination, chase, mission)
3
legwork(study, check, cheat, speed)
3
observing(study, check, search, examination)
3
sifting(study, review, search, examination)
3
verification(study, check, measure, review)
2
appraisal(study, change, check, notice)
2
blue book(expression, study, check, review)
2
case
2
cross-examination(study, check, review, judgment)
2
debate(study, class, exercise, subject)
2
deliberation(study, class, exercise, subject)
2
diagnosis(study, check, disease, review)
2
evaluation(study, change, check, notice)
2
exam(study, check, review, approval)
2
fact-finding(study, check, cheat, speed)
2
hustle(study, check, cheat, speed)
2
learning(study, class, exercise, subject)
2
question(review, request, query, autopsy)
2
scan(study, check, review, search)
2
tryout(study, check, measure, review)
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APASmart Define. (2015). investigation thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/investigation/thesaurus/synonyms
ChicagoSmart Define. 2015. "investigation thesaurus" https://smartdefine.org/investigation/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, investigation thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/investigation/thesaurus/synonyms>.
MLASmart Define. "investigation thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/investigation/thesaurus/synonyms>