adjective
- Giving no light.
- usage: "lightless stars `visible' only to radio antennae"
- Without illumination.
- usage: "came up the lightless stairs"; "the unilluminated side of Mars"; "through dark unlighted (or unlit) streets"
- synonyms: unilluminated, unlighted, unlit
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). lightless. Retrieved September 20, 2026, from http://smartdefine.org/lightless/definitions/1177570 |
| Chicago | WordNet. 2010. "lightless" http://smartdefine.org/lightless/definitions/1177570 (accessed September 20, 2026). |
| Harvard | WordNet 2010, lightless, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/lightless/definitions/1177570>. |
| MLA | WordNet. "lightless" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/lightless/definitions/1177570> |