Being out of sorts, a phrase used to describe someone who is feeling irritable or unwell, has several antonyms which can be used to convey the opposite feeling. Calm, peaceful, and serene are three antonyms that can be used to describe someone who is composed and tranquil, rather than agitated and restless. Additionally, content, happy, and satisfied are antonyms that indicate a state of overall well-being and positivity, rather than experiencing discomfort or agitation. Finally, energetic, lively, and vivacious are antonyms that convey a sense of liveliness and enthusiasm, rather than feeling lethargic or unwell.