Most long-faced refers to a person with a sadness or seriousness in their appearance. Antonyms for this term could include cheerful, happy-go-lucky, or upbeat. A cheerful person has a bright, positive expression, and exudes a joyful energy. A happy-go-lucky person is carefree and optimistic, unconcerned with heavy thoughts or negative vibes. An upbeat person is energetic and optimistic, projecting a lively mood and positive outlook. These terms provide a stark contrast to the somberness associated with being long-faced. It is important to choose the right words to convey the intended meaning, and antonyms can help you achieve that balance.