The word "workablenesses" is somewhat uncommon and rarely used in day-to-day language. Nevertheless, there are several synonyms that can be used instead of this word, such as feasibility, practicality, adequacy, manageability, suitability, and effectiveness. These words are all pertinent when describing the degree to which something is workable or usable in a given context. For instance, if a project is described as "feasible," it means that it is likely to succeed. While if it is described as "manageable," it means that it is not too complicated or difficult to handle. Therefore, when searching for a synonym for workablenesses, consider the specific context in which it will be used, as each synonym may have a slightly different connotation.