5
unproved
4
unproven(verb, adjective)
3
hypothetical(adjective, assumed, guessed)
3
theoretical(adjective, hypothetical)
2
experimental(adjective, exploratory)
2
exploratory
2
fictitious(adjective, honest, untrue, factual)
2
in mind
2
speculative(adjective, safe)
2
trial(adjective, definite, experimental)
1
academic
1
baseless
1
conjectural(adjective, speculative)
1
doubtful
1
erroneous
1
fabled
1
false(open, sound, right)
1
groundless(adjective, reason, justification)
1
innuendo
1
putative(adjective, true, believed)
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APASmart Define. (2015). proven thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/proven/thesaurus/antonyms
ChicagoSmart Define. 2015. "proven thesaurus" https://smartdefine.org/proven/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, proven thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/proven/thesaurus/antonyms>.
MLASmart Define. "proven thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/proven/thesaurus/antonyms>