43 entries under exploratory topic. ×

16
empirical(adjective, adverb, reasonable, sensible, new)
14
tentative(adjective, counterfeit, new, near, reserve)
13
trial(adjective, start, new, unsettled, temporary)
11
experiential(adjective, new, fresh, trial, factual)
11
test(adjective, start, new, unsettled, trial)
10
provisional(adjective, new, near, unsettled, extra)
9
pilot(adjective, start, new, trial, untried)
8
probationary(adjective, new, fresh, unsettled, trial)
8
speculative(adjective, theoretical)
5
developmental(adjective, new, fresh, trial, untried)
5
preliminary(adjective, new, trial, untried, tentative)
5
temporary(adjective, new, unsettled, extra, trial)
4
preparatory
4
trial-and-error(adjective, new, fresh, trial, untried)
3
beginning
2
laboratory
2
momentary
2
primary
2
unconcluded(adjective, new, fresh, trial, untried)
2
unproved
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APASmart Define. (2015). experimental thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/experimental/thesaurus/synonyms
ChicagoSmart Define. 2015. "experimental thesaurus" https://smartdefine.org/experimental/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, experimental thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/experimental/thesaurus/synonyms>.
MLASmart Define. "experimental thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/experimental/thesaurus/synonyms>