The phrase "takes off weight" is often associated with diets, exercises, and weight loss. However, its antonyms are related to gaining weight and being unhealthy. Some common antonyms for "takes off weight" include "puts on weight," "gains weight," "increases weight," "puts on pounds," and "packs on the pounds." These antonyms can be used to describe unhealthy eating habits, lack of exercise, and sedentary lifestyles. It is important to note that gaining weight can be healthy for some individuals who are underweight or have certain health conditions. However, it is crucial to maintain a balanced and healthy lifestyle to avoid obesity and related health problems.