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reasonable - definition and synonyms

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adjective     reasonable pronunciation in American English
  1. 1
    someone who is reasonable behaves in a sensible and fair way

    I’ll come back when you’re in a more reasonable mood.

    be reasonable:

    Come on, be reasonable – I didn’t mean to do it!

    1. a.
      used about people’s decisions, actions, etc.

      We have taken all reasonable precautions to avoid an accident.

  2. 2
    if something is reasonable, there are good reasons for thinking that it is true or correct
    a reasonable explanation/excuse:

    I’m sure there’s a perfectly reasonable explanation for his absence.

    It’s reasonable to assume that these measures will prove successful.

    They had reasonable grounds for taking action.

    beyond (a) reasonable doubt (=so that there is little possibility of something not being true):

    The prosecution must prove their case beyond reasonable doubt.

    a reasonable chance/prospect:

    We still had a reasonable prospect of finding a job locally.

  3. 3
    fairly good, although not extremely good

    I think we have a reasonable working relationship.

    reasonable degree/level:

    The rise in population can be predicted with a reasonable degree of accuracy.

    Tourists have a right to expect a reasonable standard of accommodation.

  4. 4
    not too far, high, great, etc.

    The hotel is situated within a reasonable distance of the beach.

    Set the thermostat to a reasonable temperature.

    1. a.
      a reasonable price is fair and not too high

      It’s a friendly bar, and the prices are very reasonable.

      This service is provided at a reasonable cost.

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to manipulate someone psychologically so that they begin to question their own perceptions and memories

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Open Dictionary

Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

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