questionable Meaning, Definition & Usage

  1. adjective subject to question
    • questionable motives
    • a questionable reputation
    • a fire of questionable origin
  2. adjective satellite able to be refuted
    confutable; refutable; confutative.

WordNet

Ques"tion*a*ble adjective
Definitions
  1. Admitting of being questioned; inviting, or seeming to invite, inquiry. R.
    Thou com'st in such a questionable shape That I will speak to thee. Shak.
  2. Liable to question; subject to be doubted or called in question; problematical; doubtful; suspicious.
    It is questionable whether Galen ever saw the dissection of a human body.T. Baker.
    Syn. -- Disputable; debatable; uncertain; doubtful; problematical; suspicious.

Webster 1913