The antonyms for the phrase "most fleet-footed" would be "slow," "sluggish," "lethargic," "unenergetic," and "inert." These words refer to a lack of quickness, responsiveness, and agility in movement. Those who are not fleet-footed may find it difficult to engage in activities that require speed, like athletics or dancing. On the other hand, some may prefer a slower and more methodical approach to tasks, finding comfort in taking time to think through decisions. Overall, while being fleet-footed has its advantages, it is important to recognize that speed is not always the most important factor in one's ability to succeed.