Being nauseous is a feeling that is uncomfortable and unpleasant. However, there are certain antonyms that describe the opposite of being nauseous. These antonyms include feeling well, feeling good, feeling comfortable, feeling at ease, feeling calm, feeling content, feeling relaxed, feeling peaceful, feeling serene, and feeling happy. When someone is not nauseous, they can enjoy their life and do the things they want without feeling sick or uneasy. It is important to identify these antonyms as they help us understand the different states of well-being and remind us of what it feels like to be healthy and happy.