Incapableness is a term that describes the inability to do something, but there are numerous antonyms that can be used to describe the opposite, indicating the ability or capacity to do something. Some of these antonyms for incapableness include capability, competence, proficiency, proficiency, adequacy, efficiency, and skilfulness. These words essentially imply that a person or thing has the necessary knowledge, skills, or potential to accomplish a particular task. Other antonyms that can also be used to describe the opposite of incapableness, depending on the context or situation, may include words like ability, talent, aptitude, dexterity, expertise, or skill. All these antonyms convey a positive, powerful, and productive connotation, unlike the limiting and negative aspect of incapableness.