SADDEN

To make sad. Specifically:

To render heavy or cohesive. [Obs.] Marl is binding, and saddening of land is the great prejudice it doth to clay lands. Mortimer.

To make dull- or sad-colored, as cloth.

To make grave or serious; to make melancholy or sorrowful. Her gloomy presence saddens all the scene. Pope.

To become, or be made, sad. Tennyson.