The phrase "were down mouth" could be used to describe someone who is feeling sad, disappointed, or pessimistic. Antonyms for this phrase would be words that convey positivity, optimism, and enthusiasm. Some antonyms for the phrase "were down mouth" could include words like cheerful, upbeat, enthusiastic, excited, lively, animated, high-spirited, buoyant, joyful, and exuberant. By using antonyms like these, you can turn your mood around and feel more optimistic and positive about life. So, the next time you feel "were down mouth," try using some of these antonyms to help you feel more positive and enthusiastic about life.