When looking for synonyms for the phrase "most covenanted," several words come to mind. One possible synonym is "most coveted," which implies something highly desirable and sought after. Other alternatives include "most cherished," which suggests that something is valued deeply, and "most treasured," which connotes a sense of deep emotional attachment or sentimentality. Another possibility is "most esteemed," which implies respect and admiration from others. Finally, "most prized" could be used to convey the idea that an object, skill, or quality is highly valued and sought after. Each of these synonyms captures a slightly different nuance of "most covenanted".