sullen

Showing a brooding ill humor or silent resentment; morose or sulky.

Gloomy or somber in tone, color, or portent.

Sluggish; slow.

To make sullen, morose, or sulky.

Being alone; solitary; lonely; hence, single; unmarried.

Being but one; unique; hence, rare; remarkable.

Remaining alone through ill humor; unsociable; silent and cross; sulky; morose; glum.

Gloomy; dismal; somber.

Sad; sorrowful; melancholy.

Slow-moving; sluggish; dull: as, a sullen pace.