Superably is not a widely used word, but there are several synonyms that can be applied depending on the context. When it comes to accomplishing something with great skill or expertise, synonyms like proficiently, adeptly, skillfully, expertly, or masterfully are more commonly used. These words all convey a sense of proficiency or capability in a particular task or area. Moreover, if the emphasis is on surpassing expectations or performing exceptionally well, alternatives like remarkably, impressively, extraordinarily, or excellently can be employed. These synonyms highlight a superior level of performance or achievement, showcasing the individual's exceptional abilities. While "superably" may not be frequently used, there are plenty of synonymous options available to communicate the intended meaning effectively.