The word "chawing on" refers to the act of biting or chewing something with vigor or enthusiasm. Its antonyms include abstaining, avoiding, fasting, ignoring, neglecting, and refusing. These words suggest a lack of interest or unwillingness to engage with the activity of eating. In contrast, synonyms for "chawing on" include munching, gnawing, chomping, and devouring. These words suggest a high level of engagement with food and imply an enjoyment of eating. Overall, the antonyms of "chawing on" suggest a disinterest in the act of eating, while the synonyms imply an enthusiastic approach to food consumption.