(a.) Not able; not having sufficient strength, means, knowledge, skill or the like; impotent' weak; helpless; incapable; -- now usually followed by an infinitive or an adverbial phrase; as, unable for work; unable to bear fatigue.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). unable. Retrieved September 20, 2026, from http://smartdefine.org/unable/definitions/2076162 |
| Chicago | Webster's. 2011. "unable" http://smartdefine.org/unable/definitions/2076162 (accessed September 20, 2026). |
| Harvard | Webster's 2011, unable, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/unable/definitions/2076162>. |
| MLA | Webster's. "unable" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/unable/definitions/2076162> |