The antonyms for the word "ill humour" are words that describe a positive emotional state, such as happiness, cheerfulness, joyfulness, and contentment. These contrasting words convey a sense of well-being, positivity, and good nature. Happy people tend to be more outgoing, friendly, and approachable, while those in a state of ill humour tend to be moody, negative, and isolated. By focusing on positive emotions, we can improve our mental and emotional well-being, leading to a happier and more fulfilling life. Therefore, it is essential to surround ourselves with positivity that can uplift our mood and lead us to a more positive outlook on life.