The antonym for "am refreshed" could be "am tired" or "am exhausted". These words depict the opposite state of feeling after a good rest or sleep. Feeling tired often happens after a long day, physical activity, or even when one has not had an adequate amount of sleep. Conversely, when someone is refreshed, they often have more energy, a clearer mind, and a better overall sense of well-being. Thus, using the appropriate antonyms for "am refreshed" can be helpful in expressing the opposite feeling of tiredness and exhaustion, which is important for clear communication in both spoken and written language.