16
hypothetical(adjective, belief, fantastic, unreal, apparent)
14
conjectural(adjective, belief, apparent, supposition, theoretical)
14
suppositional(adjective, belief, apparent, supposition, supposed)
14
suppositious(adjective, false, belief, counterfeit, true)
12
supposed(adjective, belief, fantastic, unreal, apparent)
10
false(adjective, fake, counterfeit, true, untrue)
10
spurious(adjective, wrong, fake, deception, counterfeit)
10
theoretical(adjective, fake, false, fantastic, unreal)
9
assumed(adjective, counterfeit, fantastic, untrue, unreal)
9
bogus(adjective, fake, informal, deception, counterfeit)
9
fictitious(adjective, fake, false, counterfeit, fantastic)
8
counterfeit(adjective, fake, deception, true, mock)
8
mock(adjective, fake, deception, false, counterfeit)
8
phony(adjective, fake, informal, counterfeit, true)
8
sham(adjective, fake, informal, deception, false)
8
suppositive(adjective, belief, apparent, supposition, supposed)
7
alleged(adjective, apparent, theoretical, supposed, hypothetical)
7
bastard(noun, deception, undueness)
7
divinatory(adjective, conjectural)
7
factitious(adjective, deception, untrue, untruth, developed)
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APASmart Define. (2015). supposititious thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/supposititious/thesaurus/synonyms
ChicagoSmart Define. 2015. "supposititious thesaurus" https://smartdefine.org/supposititious/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, supposititious thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/supposititious/thesaurus/synonyms>.
MLASmart Define. "supposititious thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/supposititious/thesaurus/synonyms>