gloom

1 a state or spell of low spirits has been in a perpetual gloom since his dog died Synonyms blue devils, blues, dejection, depression, desolation, despond, despondence, despondency, disconsolateness, dispiritedness, doldrums, dolefulness, downheartedness, dreariness, dumps, forlornness, sadness, gloominess, glumness, heartsickness, joylessness, melancholy, miserableness, mopes, mournfulness, oppression, sorrowfulness, unhappinessRelated Words melancholia, self-pity; anguish, dolor, grief, mourning, somberness, sorrow, woefulness; agony, distress, pain; misery, woe, wretchedness; discouragement, disheartenment; moodiness; despair, desperation, hopelessness, self-despair; boredom, ennui, tedium; dismalness, drear, morbidness, moroseness, morosity; regret, rueNear Antonyms gaiety (also gayety), gayness, glee, gleefulness, humor, jollity, joviality, lightheartedness, merriment, mirth, mirthfulness; cheer, cheerfulness, cheeriness, hopefulness, optimism, sunniness; content, contentedness, contentment, satisfaction; delight, gratificationAntonyms bliss, blissfulness, ecstasy, elatedness, elation, euphoria, exhilaration, exuberance, exultation, felicity, gladness, gladsomeness, happiness, heaven, intoxication, joy, joyfulness, joyousness, jubilation, rapture, rapturousness

2 a time or place of little or no light the gloom of a rainy night is the perfect setting for a mystery story Synonyms black, blackness, candlelight, darkness, dusk, gloaming, dark, murk, night, semidarkness, shade, shadows, twilight, umbraRelated Words midnight; blackout, brownout, dimout; shadiness, umbrage; dullness (also dulness), somberness; cloudiness, fogginess, haziness, mistiness, murkiness; dimness, faintness, gloominess, grayness, paleness; half-lightNear Antonyms moonlight, starlight, sunlight; effulgence, radiance, radiancy, shine, sunshine; incandescence, luminance, luminescence, luminosity, luminousnessAntonyms blaze, brightness, brilliance, day, daylight, glare, glow, light, lightness