Chewing the rag is a colloquial idiom, meaning to engage in idle conversation or gossip. Some antonyms for "chewing the rag" could be "focused," "productive," "efficient," or "serious." These words suggest a different tone or attitude towards communication, such as being goal-oriented, disciplined, or task-focused. Other antonyms could include "silent," "introverted," "reserved," or "solitary," which suggest a lack of communication or social interaction altogether. Using these antonyms might help illustrate a contrast between the positive or negative aspects of "chewing the rag" and a more productive or focused approach to communication or work.