Lack of knowledge; obscurity or meaning or intelligibility; the unknown.
Secrecy; concealment.
The product of being dark.
Gloom; gloominess; depression.
The state of being dark; lack of light; the absolute or comparative absence of light.
Hell.
The state or quality of reflecting little light, of tending to a blackish or brownish color.
Lack of understanding or compassion; spiritual or mental blindness.
The condition of being unclear; vague.
Something which is vague, or an instance or example of vagueness.