unnatural

Adjective

• speaking or behaving in an artificial way to make an impression

• not normal; not typical or usual or regular or conforming to a norm
  • abnormal powers of concentration
    
  • abnormal amounts of rain
    
  • abnormal circumstances
    
  • an abnormal interest in food
    

• not in accordance with or determined by nature; contrary to nature
  • an unnatural death
    
  • the child's unnatural interest in death
    

Related words

• Synonyms: 
  affected , abnormal
• Antonyms: 
  unaffected , normal , natural