Longfaced is an adjective used to describe a person who appears sad, disappointed, or unhappy. Antonyms for long-faced would be cheerful, happy, elated, delighted, thrilled, and contented. To be cheerful is to be in a positive mood, showing happiness and joy. Happy means experiencing pleasure or contentment, and elated is a feeling of great joy or pride. Delighted is a state of being highly pleased or satisfied, while thrilled refers to a sensation of excitement or pleasure. Lastly, contented means feeling satisfied with what one has or has achieved. These antonyms for long-faced are useful words to express positive emotions.