Gloom vs. Sullen — What's the Difference?

Gloom is a low level of light which is so dim that there are physiological and psychological effects. Human vision at this level becomes monochrome and has lessened clarity.

Bad-tempered and sulky

Partial or total darkness; dimness

A sulky or depressed mood.

A partially or totally dark place, area, or location.

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

An atmosphere of melancholy or depression

Gloomy or somber in tone, color, or portent

A state of melancholy or depression; despondency.

Sluggish; slow

To be or become dark, shaded, or obscure.

Having a brooding ill temper; sulky.

To feel, appear, or act despondent, sad, or mournful.

Gloomy; dismal; foreboding.

To make dark, shaded, or obscure.

Sluggish; slow.

(Archaic) To make despondent; sadden.

(obsolete) Lonely; solitary; desolate.

Darkness, dimness, or obscurity.

(obsolete) Mischievous; malignant; unpropitious.

A depressing, despondent, or melancholic atmosphere.

(obsolete) Obstinate; intractable.

Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.

(obsolete) One who is solitary, or lives alone; a hermit.

A drying oven used in gunpowder manufacture.

Sullen feelings or manners; sulks; moroseness.

(intransitive) To be dark or gloomy.

Lonely; solitary; desolate.

(intransitive) To look or feel sad, sullen or despondent.

Gloomy; dismal; foreboding.

(transitive) To render gloomy or dark; to obscure; to darken.

Mischievous; malignant; unpropitious.

(transitive) To fill with gloom; to make sad, dismal, or sullen.

Gloomily angry and silent; cross; sour; affected with ill humor; morose.

To shine or appear obscurely or imperfectly; to glimmer.

Obstinate; intractable.

Partial or total darkness; thick shade; obscurity; as, the gloom of a forest, or of midnight.

Heavy; dull; sluggish.

A shady, gloomy, or dark place or grove.

One who is solitary, or lives alone; a hermit.

Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.

Sullen feelings or manners; sulks; moroseness; as, to have the sullens.

In gunpowder manufacture, the drying oven.

To make sullen or sluggish.

To shine or appear obscurely or imperfectly; to glimmer.

Showing a brooding ill humor;

To become dark or dim; to be or appear dismal, gloomy, or sad; to come to the evening twilight.

Darkened by clouds;

To render gloomy or dark; to obscure; to darken.

To fill with gloom; to make sad, dismal, or sullen.

A state of partial or total darkness;

A feeling of melancholy apprehension

An atmosphere of depression and melancholy;