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frequency

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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

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noun British English pronunciation: frequency /ˈfriːkwənsi/ 
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singularfrequency
pluralfrequencies
  1. 1
    [uncountable] the number of times that something happens during a period of time
    frequency of:

    Changes in sea temperature will increase the frequency of hurricanes.

    with increasing frequency (=more often):

    Accidents occur here with increasing frequency.

    1. a.
      the number of instances of something
      frequency of:

      We hope this treatment will reduce the frequency of heart disease.

      high/low frequency:

      Words with higher frequency are likely to have more complex behaviour.

    2. b.
      used for saying that something happens a lot

      We became suspicious of the frequency and size of his bank withdrawals.

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