87 entries under theoretical topic. ×

23
hypothetical(adjective, uncertain, doubtful, abstract, imaginary)
20
conjectural(adjective, unsettled, vague, supposition)
17
risky(adjective, bad, heavy, doubtful, intention)
15
suppositional(adjective, uncertain, doubtful, vague, imaginary)
14
abstract(adjective, wild, unreasonable, useless, absurd)
14
academic(adjective, philosophy, uncertain, doubtful, vague)
13
uncertain(adjective, delicate, sensitive, doubtful, unsettled)
12
hazardous(adjective, delicate, uncertain, sensitive, unsettled)
11
notional
9
tentative(adjective, new, uncertain, doubtful, unsettled)
8
presumed(adjective, suppositional)
8
supposed(adjective, uncertain, doubtful, vague, imaginary)
7
debatable(adjective, shaky, vague, imaginary, unlikely)
7
experimental(adjective, exploratory)
6
assumed(adjective, uncertain, doubtful, vague, supposition)
6
dicey(adjective, delicate, uncertain, sensitive, unsettled)
6
ideal(adjective, abstract, romantic, creative)
6
iffy(adjective, delicate, uncertain, sensitive, doubtful)
6
unproven(adjective, experiment)
5
intellectual(adjective, thoughtful, abstract, reflective)
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APASmart Define. (2015). speculative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/speculative/thesaurus/synonyms
ChicagoSmart Define. 2015. "speculative thesaurus" https://smartdefine.org/speculative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, speculative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/speculative/thesaurus/synonyms>.
MLASmart Define. "speculative thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/speculative/thesaurus/synonyms>