130 entries under investigate topic. ×
| verify(dig, explore, research, delve) | |
| watch(verb, study, check, consider, examine) | |
| action(dig, research, probe, burrow) | |
| feel around(expression, dig, explore, research) | |
| observe(verb, study, check, examine) | |
| prod(dig, explore, research, delve) | |
| put out a feeler(expression, idiom, dig, explore) | |
| quiz(dig, explore, research, delve) | |
| solicit(verb, run, agitate, test) | |
| sound out(expression, dig, explore, research) |
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| APA | Smart Define. (2016). sift thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/sift/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sift thesaurus" https://smartdefine.org/sift/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, sift thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/sift/thesaurus/synonyms>. |
| MLA | Smart Define. "sift thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/sift/thesaurus/synonyms> |