costly - definition and synonyms

adjective formal 

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  1. 1
    costing a lot of money

    They have been investing in costly new equipment.

    a costly business/process/exercise:

    Changing your company’s management style can be a costly business.

    1. a.
      used about something that costs more money than you want to pay

      Appeals can be costly and time-consuming.

    2. b.
      used about something that is expensive but of very good quality