Synonyms of speculative

2 Syllables

dreamy, parlous, hairy, chancy, chancier, riskier, moony, abstract, iffy, doubtful, risky, ideal, dicey, dreamier

3 Syllables

fact-finding, theoretic, hazardous, jeopardous, notional, stochastic, heuristic, assumed, logical, factfinding, empiric, unproved, socratic, unproven, dangerous, inquiring, experient, nonviable, presumed, uncertain, pensive

4 Syllables

tentative, reflective, visionary, dangersome, trial-and-error, devisable, conceptive, idealized, doctrinaire, ideational, outward-looking, catechistic, impractical, theoretical, refutable, experiential, infeasible, intellectual, empirical

5 Syllables

unnegotiable, ideological, introvertive, experimental, hypothetical, unsubstantiated, formularized, contemplative, probationary, analytical, inquisitive, observational, philosophical, unserviceable, ruminative

6 Syllables

phantasmagorical, investigatory, excogitative, unbusinesslike