Having an absolute or (more often) relative lack of light. (adjective)
Dull or deeper in hue; not bright or light. (adjective)
Hidden, secret (adjective)
Without moral or spiritual light; sinister, malign. (adjective)
Conducive to hopelessness; depressing or bleak (adjective)
Lacking progress in science or the arts; said of a time period (adjective)
With emphasis placed on the unpleasant aspects of life; said of a work of fiction, a work of nonfiction presented in narrative form or a portion of either (adjective)
Having racing capability not widely known. (adjective)
A complete or (more often) partial absence of light. (noun)
Examples of word dark
~ Measuring the unseeable: Researchers probe proteins' 'dark energy' -- Researchers at the University of Pennsylvania School of Medicine are the first to observe and measure the internal motion inside proteins, or its dark energy.
He would feel and cry out to her, 'Let me tell you alone, if I must tell it, and _in the dark, in the dark_!' when he could not see the heart-breaking shame grow upon her face, nor see his own guilty face reflected in her eyes.
Or when the substances are consumed _as solids_, then the spectral effects are reversed, and the lines that would be dark lines in the luminous colored spectrum become themselves luminous lines on the screen; but these lines hold the same relation in mathematical measurement, etc., as do the _dark_ lines in the colored spectrum.
II. iii.309 (63,9) [To the dark house] The _dark house_ is a house made gloomy by discontent.
"Dark, dark, and dark-'* Despair swept away before tenderness.