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Alternative forms[edit]


question +‎ -able


  • IPA(key): /ˈkwɛst͡ʃənəbl̩/
  • (file)
  • Hyphenation: ques‧tio‧nable


questionable (comparative more questionable, superlative most questionable)

  1. Problematic; open to doubt or challenge.
    It is questionable if the universe is open or closed.
    • 1881, Henry James, chapter 3, in The Portrait of a Lady[1], volume 1, Boston: Houghton, Mifflin and Company, page 28:
      A crude, cold rain was falling heavily; the spring-time presented itself as a questionable improvement.
  2. Of dubious respectability or morality.
    Tiffiny’s behavior is highly questionable.
    • 1920, Carolyn Wells, Raspberry Jam, Philadelphia: J.B. Lippincott, Chapter 18, p. 302,[2]
      [] he had a love of money—a sort of acquisitiveness, that led him into questionable dealings.
  3. (obsolete) Inviting questions; inviting inquiry.

Derived terms[edit]