obscurity

Noun

• the state of being indistinct or indefinite for lack of adequate illumination

• an obscure and unimportant standing; not well known
  • he worked in obscurity for many years
    

• the quality of being unclear or abstruse and hard to understand

Related words

• Synonyms: 
  obscureness , abstruseness , reconditeness
• Antonyms: 
  prominence , clarity , lucidity , lucidness , pellucidity , clearness , limpidity