Synonyms|51Antonyms|18|Broader|0Narrower|0Related|98
1
conjectural
1
hypothetical
1
speculative
1
theoretical
0
academic
0
heedless
0
metaphysical
0
negligent
0
nonempirical
0
remiss
0
suppositional
0
theoretic
0
transcendentalist
0
unempirical
0
unproved(adjective, conjectural, empirical)
0
unproven
0
unsubstantiated
0
visionary
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APASmart Define. (2013). observational thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/observational/thesaurus/antonyms
ChicagoSmart Define. 2013. "observational thesaurus" https://smartdefine.org/observational/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2013, observational thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/observational/thesaurus/antonyms>.
MLASmart Define. "observational thesaurus" 28 June 2013. Web. 22 September 2026. <https://smartdefine.org/observational/thesaurus/antonyms>