mar in WordNet English dictionary

1. a mark or flaw that spoils the appearance of something (especially on a person's body)
   "a facial blemish"
   blemish  defect  mar 
   

1. make imperfect
   "nothing marred her beauty"
   mar  impair  spoil  deflower  vitiate 
   
2. destroy or injure severely
   "mutilated bodies"
   mutilate  mar