Unsatisfactory is a word that describes something that is not acceptable or satisfactory. Its antonyms, on the other hand, are those words that describe something that is pleasing, fulfilling, or satisfactory. Some common antonyms for unsatisfactory are excellent, outstanding, remarkable, exceptional, exceptional, satisfactory, and fulfilling. These words often indicate that something meets or exceeds expectations and leaves a positive impression. For instance, an exceptional meal, an extraordinary performance, or outstanding customer service would be regarded as antonyms to unsatisfactory. Using these antonyms in place of unsatisfactory can help people to express positive feelings and improve the overall tone of their communication.