The antonyms for the phrase "walking heavy" can be "skipping lightly," "treading lightly," "floating gracefully," or "gliding smoothly." When we think of walking heavy, it often signifies being burdened or burdening others. By contrast, skipping lightly suggests an ease and carefree joy in movement, while treading lightly implies a show of respect for one's surroundings. Floating gracefully connotes a gentle and relaxed motion, whereas gliding smoothly implies a high level of control and suppleness. Choosing antonyms for "walking heavy" can shift the mood and tone of a sentence or conversation, conveying a wide range of emotions and attitudes.