When you're feeling exhausted after a long day, the phrase "dead-tired" might come to mind. However, there are plenty of antonyms that describe the opposite feeling. For example, you might feel invigorated, rejuvenated, or energized after a good night's sleep. If you're feeling less tired but not quite energized, you might describe yourself as refreshed, alert, or lively. Other antonyms for "dead-tired" might include peppy, vibrant, or animated. No matter which words you choose, finding the right antonym for "dead-tired" can help you feel more focused, productive, and ready to take on the world.