abstract, academic, adventurous, aleatory, analytical, arguable, armchair, at issue, chancy, closet, cogitative, cognitive, concentrating, concentrative, conceptive, conceptual, conceptualized, confutable, conjectural, contemplating, contemplative, contestable, controversial, controvertible, curious, debatable, deliberating, deliberative, deniable, dicey, disputable, doubtable, doubtful, dubious, dubitable, excogitating, full of risk, hazardous, hypothetic, hypothetical, ideal, idealistic, idealized, ideational, ideative, iffy, impractical, in dispute, in doubt, in dubio, in question, inquiring, intellectual, introspective, meditating, meditative, mental, mistakable, moot, museful, musing, noetic, notional, open to doubt, open to question, pensive, pondering, postulatory, prehensive, problematic, questionable, questioning, ratiocinative, rational, reflecting, reflective, refutable, riskful, risky, ruminant, ruminating, ruminative, serious, sober, suppositional, supposititious, suppositive, suspect, suspicious, theoretical, thinking, thought, thoughtful, uncertain, unpractical, unproved, unproven, unrealistic, unreliable, untested, untrustworthy, venturesome, venturous, wildcat, wistful