- (a.) Liable to question; subject to be doubted or called in question; problematical; doubtful; suspicious.
- (a.) Admitting of being questioned; inviting or seeming to invite, inquiry.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). questionable. Retrieved September 22, 2026, from http://smartdefine.org/questionable/definitions/2051868 |
| Chicago | Webster's. 2011. "questionable" http://smartdefine.org/questionable/definitions/2051868 (accessed September 22, 2026). |
| Harvard | Webster's 2011, questionable, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/questionable/definitions/2051868>. |
| MLA | Webster's. "questionable" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/questionable/definitions/2051868> |