sadden

To make sad or unhappy.

It saddens me to think that I might have hurt someone.

The turmoil went on—no rest, no peace. […] It was nearly eleven o'clock now, and he strolled out again. In the little fair created by the costers' barrows the evening only seemed beginning; and the naphtha flares made one's eyes ache, the men's voices grated harshly, and the girls' faces saddened one.

To become sad or unhappy.

He saddens, all the magic light ⁠Dies off at once from bower and hall, ⁠And all the place is dark, and all The chambers emptied of delight: […]

Hyacinth perfume tickled her senses, making her feel giddy, but she saddened when she saw how uncared for the garden was.

To darken a color during dyeing.

Curve (E) is seen at a glance to represent green saddened down to its fifth shade, and reduced with white to its fourth tint.

To render heavy, hard, or cohesive; to compress or thicken.

Marle's binding and sadning of land being the great Prejudice it doth to Clay-lands.

... the soil below will, instead of being brought up, be trampled and saddened.