- Lack of ability; inability.
- 1644, John Milton, Aeropagitica:
- there being so many whose businesse and profession meerly it is, to be the champions of Truth; which if they neglect, what can be imputed but their sloth, or unability?
- 1999, Albert J. Widmann, The Stone Age of Faith:
- Until today we have not made much progress over Democrit who postulated that it is only our unability to register and explain a great number of fast events in a non-linear way, i.e. not according to the principle of cause and effect.
- 1999, Christian Bühler, Harry Knops, Assistive Technology on the Threshold of the New Millennium:
- For the most common unabilities of disabled and older to perform different tasks in the kitchen, some adapted elements, including a robot-arm, have been designed.
- 2012, Johan H. C. Reiber, P.W. Serruys, Advances in Quantitative Coronary Arteriography:
- Failures were related to the unability to selectively place the guiding catheter at the coronary ostium in 2 cases and to the unability to cross the lesion in 8 cases.
- 2012, Walter Berger, Financial Innovations in International Debt Management:
- Equally ambivalent is the attempt to operationalize country risk by differentiating a sovereign debtor's "unability" and "unwillingness" to pay.
- 2012, Julian F. Johnson, Roger S. Porter, Liquid Crystals and Ordered Fluids - Volume 2:
- The main factors that determine the location of the boundaries for the region of existence of a phase and thus its transition to another phase seem to be its ability or unability to incorporate water.