forbidding

Adjective

• threatening or foreshadowing evil or tragic developments
  • a baleful look
    
  • forbidding thunderclouds
    
  • his tone became menacing
    
  • ominous rumblings of discontent
    
  • sinister storm clouds
    
  • a sinister smile
    
  • his threatening behavior
    
  • ugly black clouds
    
  • the situation became ugly
    

• harshly uninviting or formidable in manner or appearance
  • a dour, self-sacrificing life
    
  • a forbidding scowl
    
  • a grim man loving duty more than humanity
    
  • undoubtedly the grimmest part of him was his iron claw- J.M.Barrie
    

Noun

• an official prohibition or edict against something

Related words

• Synonyms: 
  baleful , menacing , minacious , minatory , ominous , sinister , threatening , dour , grim , ban , banning , forbiddance