Definition of unmarked adjective from the Oxford Advanced American Dictionary

     

    unmarked

     adjective
    adjective
    NAmE//ʌnˈmɑrkt//
     
     
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  1. 1without a sign or words to show what or where something is an unmarked police car He was buried in an unmarked grave. compare marked
  2. 2 (linguistics) (of a word or form of a word) not showing any particular feature or style, such as being formal or informal opposite marked
See the Oxford Advanced Learner's Dictionary entry: unmarked