[1] : The Collaborative International Dictionary of English v.0.48

conjectural \conjec"tural\, a. l. conjecturalis: cf. f.
   conjectural.
   dependent on conjecture; fancied; imagined; guessed at;
   undetermined; doubtful.
   1913 webster

         and mak'st conjectural fears to come into me. --shak.
   1913 webster

         a slight expense of conjectural analogy. --hugh miller.
   1913 webster

         who or what such editor may be, must remain
         conjectural.                             --carlyle.
   1913 webster

[2] : WordNet (r) 2.0

conjectural
     adj : based primarily on surmise rather than adequate evidence;
           "theories about the extinction of dinosaurs are still
           highly conjectural"; "the supposed reason for his
           absence"; "suppositious reconstructions of dead
           languages"; "supposititious hypotheses" syn: divinatory,
            supposed, suppositional, suppositious, supposititious
see also:
divinatory supposed suppositional suppositious supposititious 

[3] : Moby Thesaurus II by Grady Ward, 1.0

44 moby thesaurus words for "conjectural":
   abstract, academic, arguable, armchair, at issue, confutable,
   contestable, controversial, controvertible, debatable, deniable,
   disputable, doubtable, doubtful, dubious, dubitable, hypothetic,
   hypothetical, ideal, iffy, impractical, in dispute, in doubt,
   in dubio, in question, mistakable, moot, notional, open to doubt,
   open to question, postulatory, problematic, putative, questionable,
   refutable, reputed, speculative, suppositional, supposititious,
   suppositive, suppository, suspect, suspicious, theoretical

Conjectural >> C Words
Conjectural, definition of term: Conjectural
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