98 entries under investigate topic. ×

2
make inquiry(verb, expression, study, consider, examine)
2
prod(verb, research)
2
prowl(verb, follow, examine, pursue, look)
2
query(verb, question, research)
2
quiz(verb, question, research)
2
reconnoiter(verb, study, consider, examine, review)
2
sound(verb, understand, comprehend, research)
2
trowel(verb, move, action, dig)
1
be after(verb, follow, pursue, scratch)
1
be on the lookout(verb, examine, look, seek, search)
1
bird-dog(verb, follow, pursue, seek)
1
bob for(verb, expression, follow, pursue)
1
chase(verb, follow, pursue, seek)
1
check(study, research)
1
comb(verb, follow, pursue, search)
1
delve for(verb, expression, follow, pursue)
1
dig for(verb, expression, follow, pursue)
1
dragnet(verb, follow, pursue, scratch)
1
fan(verb, follow, pursue, scratch)
1
fish(verb, disturb, follow, pursue, search)
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APASmart Define. (2015). delve thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/delve/thesaurus/synonyms
ChicagoSmart Define. 2015. "delve thesaurus" https://smartdefine.org/delve/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, delve thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/delve/thesaurus/synonyms>.
MLASmart Define. "delve thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/delve/thesaurus/synonyms>