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extreme

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noun [countable] British English pronunciation: extreme /ɪkˈstriːm/ 
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singularextreme
pluralextremes
  1. 1
    an opinion or way of behaving that is as different from another as it is possible to be
    at the other/opposite extreme:

    Louise goes to the gym every day. At the other extreme, her husband does absolutely no exercise at all.

    from one extreme to the other:

    When it comes to eating, I go from one extreme to the other.

    between two extremes:

    The public’s views on genetic engineering seem to range between two extremes.

    Thesaurus entry for this meaning of  extremeThesaurus entry for this meaning of extreme
  2. 2
    [usually plural] a very large or very small degree of something
    extreme of:

    Extremes of temperature are not good for your skin.

    The country still contains extremes of wealth and poverty.

    Thesaurus entry for this meaning of  extremeThesaurus entry for this meaning of extreme

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