Questionable

Part of speech: adjective (a.)

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.

Synonyms: Disputable; debatable; uncertain; doubtful; problematical; suspicious.