21
hypothetical(adjective, belief, abstract, imaginary, apparent)
21
theoretical(adjective, vague, abstract, imaginary, supposition)
20
speculative(adjective, unsettled, vague, supposition, theoretical)
18
suppositional(adjective, belief, vague, apparent, supposition)
15
supposititious(adjective, belief, apparent, supposition, theoretical)
13
supposed(adjective, belief, vague, apparent, theoretical)
12
suppositious(adjective, belief, vague, apparent, supposition)
11
hypothetic(adjective, belief, theoretical, supposed)
10
academic(adjective, philosophy, supposition, speculative)
10
assumed(adjective, vague, imaginary, supposition, theoretical)
10
doubtful(adjective, vague, unsure, imaginary, theoretical)
9
presumptive(adjective, belief, supposition, hypothetical)
9
putative(adjective, vague, imaginary, supposition, theoretical)
9
suppositive(adjective, belief, apparent, supposition, supposed)
8
uncertain(adjective, doubtful, vague, changeable, theoretical)
7
abstract(adjective, theoretical, academic, philosophical, speculative)
6
divinatory
5
debatable
5
dubious(adjective, doubtful, vague, unsure)
5
notional
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APASmart Define. (2015). conjectural thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/conjectural/thesaurus/synonyms
ChicagoSmart Define. 2015. "conjectural thesaurus" https://smartdefine.org/conjectural/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, conjectural thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/conjectural/thesaurus/synonyms>.
MLASmart Define. "conjectural thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/conjectural/thesaurus/synonyms>