The antonyms for the phrase "more fleet-footed" are slow, sluggish, lumbering, and plodding. These words refer to individuals who move slowly and without agility, lacking the nimbleness that the term "fleet-footed" implies. A person who is slow may be considered lazy, while someone who moves sluggishly may be seen as having poor health or lack of exercise. A lumbering person is clumsy and uncoordinated, whereas a plodding individual moves with a heavy, determined pace, lacking the grace needed for quick, agile movements. In contrast, being fleet-footed suggests dexterity, speed, and agility.