There are several antonyms which can be used to describe the opposite of being ill-humoured. Some of these include cheerful, friendly, good-humored, happy, jolly, and amiable. While being ill-humoured can result in a negative disposition, being cheerful or friendly can result in a positive and uplifting atmosphere. When faced with challenges, a good-humored person is likely to find a way to laugh it off and keep going. Someone who is happy and jolly tends to be sociable and welcoming, while an amiable person is warm and easy-going. Overall, the antonyms for ill-humoured emphasize positivity, warmth, and friendliness.