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unreasonable

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adjective American English pronunciation: unreasonable /ʌnˈriz(ə)nəb(ə)l/
  1. 1
    not fair

    Aren't you making unreasonable demands on her time?

    it is unreasonable to do something:

    It's extremely unreasonable to expect them to pay so much.

    not unreasonable:

    What we are asking is not unreasonable.

    Thesaurus entry for this meaning of unreasonable
    1. a.
      used about bad behavior that you are annoyed about

      The evening was spoilt by the unreasonable conduct of some members of the audience.

      Thesaurus entry for this meaning of unreasonable
  2. 2
    not sensible

    The price is completely unreasonable (=too high).

    it is unreasonable to do something:

    It's unreasonable to attempt a project like that without computers.

    Thesaurus entry for this meaning of unreasonable

derived word

unreasonably

adverb

unreasonably high prices

This is the American English definition of unreasonable. View British English definition of unreasonable.

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