1. (n.) Partial or total darkness; thick shade; obscurity; as, the gloom of a forest, or of midnight.

2. (n.) A shady, gloomy, or dark place or grove.

3. (n.) Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.

4. (n.) In gunpowder manufacture, the drying oven.

5. (v. i.) To shine or appear obscurely or imperfectly; to glimmer.

6. (v. i.) To become dark or dim; to be or appear dismal, gloomy, or sad; to come to the evening twilight.

7. (v. t.) To render gloomy or dark; to obscure; to darken.

8. (v. t.) To fill with gloom; to make sad, dismal, or sullen.

adumbrate becloud bedarken bedim begloom black black out blacken blackness bleakness block the light blot out blues brood brown cast a shadow cloud cloud over cloudiness dark dark shade darken darken over darkle darkness dejection depression desolation despair despondency dim dim out dimness dismalness doldrums dolor downheartedness dreariness dullness dumps dusk eclipse encloud encompass with shadow frown gloam gloominess glower gravity grimace grimness grow dark grow dim knit the brow look black look sullen low spirits lower lowering make a lip make a moue melancholy mere shadow misery mope moroseness murk murkiness obfuscate obnubilate obscure obscurity obumbrate occult occultate overcast overcloud overshadow penumbra pout sadness scowl shade shadiness shadow shadowiness shadows numberless silhouette skiagram skiagraph solemnity somber somberness sombrousness sorrow umbra umbrage umbrageousness unhappiness wearifulness wearisomeness woe