attrition - definition and synonyms

noun [uncountable] 

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/əˈtrɪʃ(ə)n/
  1. 1
    formal the process of making an enemy physically and mentally weaker by continuously attacking them
    war of attrition:

    Since 1985 they had been fighting a bloody war of attrition with hundreds of casualties on both sides.

  2. 2
    a reduction in size, numbers, or strength
    attrition rate/rate of attrition:

    Fifty volunteers left in the first year, a surprisingly high attrition rate.

  3. 3
    a deliberate gradual reduction in the number of workers in an organization, as a result of the organization not replacing those who leave or die