"Dismals" is a term that refers to a state of gloominess, darkness or dreariness. There are several antonyms to "dismals" that convey a sense of light, happiness and warmth. Some of the antonyms for "dismals" are "brightness," "cheerfulness," "delightfulness," "euphoria," "joyfulness," "positivity," "radiance," "sunniness," "vitality," and "zeal." These words evoke a feeling of optimism and hope and are often used to describe positive and joyful experiences. Using these antonyms can be helpful in describing situations, experiences or people that lift one's mood, makes them feel happy and energized.