DISPUTABLE
debatable, disputable
(adjective) capable of being disproved
arguable, debatable, disputable, moot
(adjective) open to argument or debate; “that is a moot question”
Source: WordNet® 3.1
Etymology
Adjective
disputable (comparative more disputable, superlative most disputable)
Of opinions, propositions or questions, subject to dispute; not settled.
Synonyms
• controvertible
Source: Wiktionary
Dis`pu*ta*ble, a. Etym: [L. disputabilis: cf. F. disputable. See
Dispute, v. i.]
1. Capable of being disputed; liable to be called in question,
controverted, or contested; or doubtful certainty or propriety;
controvertible; as, disputable opinions, propositions, points, or
questions.
Actions, every one of which is very disputable. Jer. Taylor.
2. Disputatious; contentious. [Obs.] Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition