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



    BrE BrE//ˈkɒstlinəs//
    ; NAmE NAmE//ˈkɔːstlinəs//
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  1. 1the fact of costing a lot of money, especially more than you want to pay synonym expense the costliness of training new employees
  2. 2the fact of causing problems or the loss of something synonym expense war's terrible costliness (= lots of people can die and be injured)