Webster's 1913 Dictionary
ARGUABLE
ARGUABLE Ar "gu *a *ble, a.
Defn: Capable of being argued; admitting of debate.
New American Oxford Dictionary
arguable
ar gu a ble |ˈärgyo͞oəbəl ˈɑːrɡjuəbl | ▶adjective able to be argued or asserted: an arguable case for judicial review | [ with clause ] : it is arguable that egg donation raises a series of moral and practical problems. • open to disagreement; not obviously correct: a highly arguable assumption.
Oxford Dictionary
arguable
ar ¦gu |able |ˈɑːgjʊəb (ə )l | ▶adjective 1 able to be argued or asserted: [ with clause ] : it was arguable that the bank had no authority to honour the cheques. 2 open to disagreement; not obviously correct: a highly arguable assumption.
American Oxford Thesaurus
arguable
arguable adjective 1 he had an arguable claim for asylum: tenable, defendable, defensible, supportable, sustainable, plausible, able to hold water; reasonable, viable, acceptable. ANTONYMS untenable. 2 it is arguable whether these routes are worthwhile: debatable, questionable, open to question, controversial, contentious, doubtful, uncertain, moot. ANTONYMS certain.
Oxford Thesaurus
arguable
arguable adjective 1 it seems to me arguable that both courts had jurisdiction: tenable, maintainable, assertable, defendable, defensible, supportable, sustainable, able to hold water; reasonable, rational, viable, workable, credible, believable, feasible, conceivable, acceptable, imaginable. ANTONYMS untenable. 2 it is arguable whether such conditions existed anyway: debatable, disputable, questionable, open to question, controversial, contentious, open to debate, doubtful, open to doubt, dubious, uncertain, unsure, moot. ANTONYMS certain.
Sanseido Wisdom Dictionary
arguable
ar gu a ble /ɑ́ː r ɡjuəb (ə )l /形容詞 ⦅かたく ⦆1 〖通例be ~〗〈考え 要点 発言などが 〉議論の余地がある, 疑わしい ▸ it is arguable whether ...…かどうかは異論がある 2 論証できる, 間違いない, もっともな ▸ It is arguable that ...…ということはもっともだ