13 entries under heuristic topic. ×

12
tentative(adjective, new, unsettled, trial, experiment)
5
trial(adjective, new, unsettled, indefinite, temporary)
3
test(adjective, new, unsettled, trial, temporary)
2
pilot(adjective, new, trial, untried, tentative)
2
trial-and-error(adjective, new, fresh, trial, untried)
1
developmental(adjective, new, fresh, trial, untried)
1
experiential(adjective, new, fresh, trial, untried)
1
exploratory(adjective, new, unsettled, trial, untried)
1
first stage(expression, adjective, new, fresh, trial)
1
on approval(expression, adjective, new, fresh, trial)
1
preliminary(adjective, new, trial, untried, tentative)
1
unconcluded(adjective, new, fresh, trial, untried)
1
under probation(expression, adjective, new, fresh, trial)
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APASmart Define. (2015). probationary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/probationary/thesaurus/synonyms
ChicagoSmart Define. 2015. "probationary thesaurus" https://smartdefine.org/probationary/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, probationary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/probationary/thesaurus/synonyms>.
MLASmart Define. "probationary thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/probationary/thesaurus/synonyms>