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costly - definition and synonyms

 
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adjective formal costly pronunciation in British English /ˈkɒs(t)li/
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adjectivecostly
comparativecostlier
superlativecostliest
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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. 2
    causing a lot of problems
    Dropping the ball with only seconds left to play was a costly mistake.

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