lightless

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. giving no light
- lightless stars 'visible' only to radio antennae
• Similar to:
invisible, unseeable
• Derivationally related forms:
lightlessness
2. without illumination
- came up the lightless stairs
- the unilluminated side of Mars
- through dark unlighted (or unlit) streets
• Syn:
unilluminated, unlighted, unlit
• Similar to:
dark
• Derivationally related forms:
lightlessness