Most mopish is an adjective that indicates someone who is sad, gloomy, and low-spirited. The antonyms for this word are cheerful, happy, and optimistic. Being optimistic is the opposite of being mopish. It means seeing the brighter side of things and having a positive attitude towards life. Similarly, cheerfulness and happiness are also the opposites of mopishness. Cheerful and happy people are lively, joyous, and full of enthusiasm. They find pleasure in little things and spread positivity wherever they go. In conclusion, the antonyms for most mopish are cheerful, happy, and optimistic, which represent the opposite emotions and attitudes.