Definition of roughness noun from the Oxford Advanced Learner's Dictionary

     

    roughness

     noun
    noun
    BrE BrE//ˈrʌfnəs//
     
    ; NAmE NAmE//ˈrʌfnəs//
     
    [uncountable]
     
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  1. 1the quality of having a surface that is not even or regular the roughness of the terrain skin roughness opposite smoothness (1)
  2. 2treatment that is not gentle or careful His guard alternated from roughness and threats to leaving him alone.
  3. 3the fact of having a lot of violence or crime the roughness of the streets
  4. 4the fact of having large and dangerous waves the roughness of the sea
  5. 5the fact of being difficult or unpleasant synonym toughness the roughness of life in those hard times