234 entries under investigate topic. ×

7
poke(verb, study, consider, examine, review)
7
poke into(verb, expression, phrasal verb, check, examine)
7
rummage(noun, verb, action, check, sound)
7
try(verb, study, check, consider, correct)
6
catechize(verb, study, check, observe, examine)
6
pierce(noun, verb, study, cut, check)
6
prod(verb, explore, research, delve)
6
prospect(verb, action, study, check, separate)
6
scour(verb, check, sound, examine, look)
6
scout(verb, study, check, consider, observe)
6
sound out(verb, expression, phrasal verb, examine, challenge)
5
canvass(verb, study, check, consider, observe)
5
feel out(verb, expression, phrasal verb, study, consider)
5
feeler(noun, opinion)
5
forage(verb, check, examine, look, seek)
5
look over(verb, expression, phrasal verb, study, check)
5
prove(verb, study, check, consider, correct)
5
pump(verb, examine, review, challenge, request)
5
ransack(verb, action, check, turn, examine)
5
reconnoiter(verb, study, check, consider, observe)
10 years ago|22k views|share |citing 
APASmart Define. (2016). probe thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/probe/thesaurus/synonyms
ChicagoSmart Define. 2016. "probe thesaurus" https://smartdefine.org/probe/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, probe thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/probe/thesaurus/synonyms>.
MLASmart Define. "probe thesaurus" 27 March 2016. Web. 29 September 2026. <https://smartdefine.org/probe/thesaurus/synonyms>