The term "walks heavy" refers to someone who is walking with a lot of force, creating a loud or burdensome sound. The antonyms for "walks heavy" could be "walks lightly," "moves gently," "steps lightly," "treads softly," or "walks softly." These terms suggest the opposite of the original phrase, conveying a sense of ease, gracefulness, and subtlety. Walking lightly or stepping gently can also signify a sense of delicacy or sensitivity, while treading softly implies a certain level of caution or mindfulness. These alternatives to "walks heavy" highlight different ways in which we can move through the world with a sense of awareness and consideration.