The antonyms for the word "un-workability" are terms that denote the opposite of the inability to work, meaning that they describe a state characterized by feasibility, practicality, and workability. Some of the antonyms for un-workability include workability, feasibility, usability, practicality, applicability, usefulness, potential, and capability. Each of these words describes a situation where something is deemed possible or able to function in a given context, be it a physical object, a system or a process. Using these antonyms in place of un-workability, therefore, creates a more positive outlook on a given situation, as it implies the potential for success and workable solutions.