debatable

from WordNet (r) 3.0 (2006)

debatable
    adj 1: open to doubt or debate; "If you ever get married, which
           seems to be extremely problematic" [syn: {debatable},
           {problematic}, {problematical}]
    2: open to argument or debate; "that is a moot question" [syn:
       {arguable}, {debatable}, {disputable}, {moot}]
    3: capable of being disproved [syn: {debatable}, {disputable}]

from The Collaborative International Dictionary of English v.0.48

Debatable \De*bat"a*ble\, a. [Cf. OF. debatable. See {Debate}.]
   Liable to be debated; disputable; subject to controversy or
   contention; open to question or dispute; as, a debatable
   question.
   [1913 Webster]

   {The Debatable Land} or {or Ground}, a tract of land between
      the Esk and the Sark, claimed by both England and
      Scotland; the Batable Ground.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

36 Moby Thesaurus words for "debatable":
      arguable, at issue, confutable, conjectural, contestable,
      controversial, controvertible, deniable, disputable, doubtable,
      doubtful, dubious, dubitable, iffy, in dispute, in doubt, in dubio,
      in question, mistakable, moot, open to doubt, open to question,
      polemic, polemical, problematic, problematical, questionable,
      refutable, speculative, suppositional, suspect, suspicious,
      uncertain, undecided, unsettled, unsure

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