deathly

Adjective

• causing or capable of causing death
  • a fatal accident
    
  • a deadly enemy
    
  • mortal combat
    
  • a mortal illness
    

• having the physical appearance of death
  • a deathly pallor
    

Adverb

• to a degree resembling death
  • he was deathly pale
    

Related words

• Synonyms: 
  deadly , mortal , deathlike