Being on edge is a state of being anxious, stressed, or nervous. Antonyms for being on edge include being relaxed, calm, or composed. If you're on edge, you may be on the lookout for danger or trouble. Conversely, if you feel calm and composed, you may be more able to focus on the present moment and enjoy the things around you. Being relaxed doesn't mean that you aren't alert or intentional - it simply means that you're not caught up in a state of stress or fear. In short, the opposite of being on edge is to feel at peace and content.