Synonyms for Lightless

Synonyms starting with letter O

• obscure

  dark-hued, lack of light, dark
• overcast

  dark-hued, lack of light, darkish
• opaque

  lack of light, darkish
• obscured

  darkish
• obfuscous

  lack of light
• overclouded

  dark
• obfuscated

  cloudy
• ominous
• oppressive
• one-color
• out of sight
• occult