unclear

Adjective

• not easily deciphered
  • indecipherable handwriting
    

• not clear to the mind
  • the law itself was unclear on that point
    
  • the reason for their actions is unclear to this day
    

• poorly stated or described
  • he confuses the reader with ill-defined terms and concepts
    

Related words

• Synonyms: 
  indecipherable , undecipherable , unreadable , ill-defined
• Antonyms: 
  clear , well-defined