Somber, Sombre, a.
Etymology: [F. sombre; cf. Sp. sombra, shade, prob. from LL. subumbrare to put in the shade; L. sub under + umbra shade. See Umbrage.]
1. Dull; dusky; somewhat dark; gloomy; as, a somber forest; a somber house.
2. Melancholy; sad; grave; depressing; as, a somber person; somber reflections. The dinner was silent and somber; happily it was also short. Beaconsfield.
2 other Webster entries under this spelling
Somber, Sombre, v. t.
To make somber, or dark; to make shady. [R.]
Somber, Sombre, n.
Gloom; obscurity; duskiness; somberness. [Obs.]