lightless   (TTS Sound)

The lightless has 2 Senses.

• lightless
• giving no light; "lightless stars `visible' only to radio antennae"
• 光を全く出さないさま

• unilluminated, unlighted, unlit, lightless
• without illumination; "came up the lightless stairs"; "the unilluminated side of Mars"; "through dark unlighted (or unlit) streets"
• 照明なしで