1. (n.) An incomplete or partial shadow.

2. (n.) The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light.

3. (n.) The part of a picture where the shade imperceptibly blends with the light.

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