lightless — lightlessness, n. /luyt lis/, adj. 1. without light or lights; receiving no light; dark. 2. giving no light. [bef. 1000; ME lihtles, OE leohtleas. See LIGHT1, LESS] * * * … Universalium
lightless — O.E. leohtleas; see LIGHT (Cf. light) (n.) + LESS (Cf. less) … Etymology dictionary