ENGLISH
REFERENCE

expensive

adj.
US //ɪkˈspɛnsɪv// UK //ɛkspˈɛnsɪv// ex·pen·sive
  1. 1 high price (adj.)
    A1 Beginner

    costing a lot of money.

    having a high price or requiring a large financial expenditure.

    Example

    I wanted to buy the new phone, but it was too expensive for me.

    Example

    The city's real estate market has become so expensive that many young professionals are forced to commute from the outer suburbs.

    Usage

    Commonly used with 'too' or 'very' to indicate a price that is difficult to afford.

    Pitfall
    The price of the car is very expensive.
    The car is very expensive.

    In English, objects are 'expensive', but prices are 'high'. You cannot say a price is expensive.

  2. 2 resource-heavy (adj.)
    C1 Advanced Technical Computing

    using a lot of a computer's power, memory, or time.

    requiring significant computational resources, such as processing power, memory, or execution time.

    Example

    Running this complex search is very expensive for the server.

    Example

    The developer refactored the code because the original sorting algorithm was too computationally expensive for mobile devices.

    Usage

    Often used to describe specific functions, algorithms, or database queries.

    Teacher's tip

    In a technical context, 'expensive' refers to efficiency rather than money.

Origin

From Latin *expēnsīvus, from expendō (“to weigh out (money), to pay out”) (whence English expend). By surface analysis, expense + -ive. In the sense of "high-priced" has largely displaced dear.

Word family
Idioms1 entry

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