The antonyms for "out of sorts peevish" would be words like cheerful, amiable, content, satisfied, and happy. These words convey a sense of positivity that is the opposite of being in a bad mood or feeling irritable. Other antonyms for "out of sorts peevish" include calm, serene, tranquil, and composed, which describe a sense of inner peace and emotional stability. Instead of feeling grumpy or impatient, someone who is calm and relaxed is more likely to approach situations with patience and understanding. By using these antonyms, we can shift our perspective and focus on being more positive and cheerful in our interactions with others.