9 letters · 13 points in Scrabble
adjective giving no light
adjective without illumination
originFrom Middle English lightles, from Old English lēohtlēas, from Proto-West Germanic *leuhtalaus; equivalent to light (noun) + -less (“lacking, without”). Cognate with West Frisian ljochtleas, Dutch lichtloos, German lichtlos.
Etymology from Wiktionary, CC BY-SA 3.0