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costly - definition and synonyms


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adjective formal costly pronunciation in American English /ˈkɔs(t)li/
Word Forms
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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.


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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