80 entries under investigate topic. ×

3
delve into(verb, expression, phrasal verb, study, check)
3
pry(verb, study, consider, sound, examine)
3
reconnoiter(verb, study, consider, examine, review)
2
appraise(verb, consider, determine, examine, figure)
2
case(verb, study, consider, view, examine)
2
check up(verb, expression, study, consider, view)
2
feel out(expression, study, consider, examine, review)
2
interrogate(verb, study, consider, examine, review)
2
look-see(verb, study, consider, examine, review)
2
make inquiries(verb, expression, study, pursue)
2
make inquiry(verb, expression, study, check, consider)
2
poke(verb, study, consider, examine, review)
2
scout(verb, study, consider, examine, review)
2
seek(verb, action, study, sound, examine)
2
sound(seize, dig, penetrate, rob)
2
verify(verb, check, examine, try, confirm)
1
action(dig, research, probe, burrow)
1
ask(search, dig, penetrate, research)
1
brainstorm(verb, view, examine, survey)
1
burrow(verb, action, examine, try, discover)
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APASmart Define. (2015). look into thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/look_into/thesaurus/synonyms
ChicagoSmart Define. 2015. "look into thesaurus" https://smartdefine.org/look_into/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, look into thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/look_into/thesaurus/synonyms>.
MLASmart Define. "look into thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/look_into/thesaurus/synonyms>