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lightless

 
Adjective lightless has 2 senses
  1. lightless - giving no light; "lightless stars `visible' only to radio antennae"
    Antonyms:
    visible, seeable (indirect, via invisible)
  2. lightless, unilluminated, unlighted, unlit - without illumination; "came up the lightless stairs"; "the unilluminated side of Mars"; "through dark unlighted (or unlit) streets"
    Antonym: light (indirect, via dark)
lighting-up lighting lighting circuit lighting column lighting fixture lighting industry lighting the candle lightining lightless lightlessness lightline lightly-armed lightly lightly armored lightly armoured lightman lightness

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