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adverb mostly pronunciation in British English /ˈməʊs(t)li/
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  1. usually, most of the time, or in most situations
    We listen to rock music mostly.
    Mostly, he avoids conflict.
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    Synonyms and related words
    1. a.
      used for saying what the largest part of something is like or consists of
      a group of journalists, mostly American
      The panel consists mostly of local businessmen.
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    2. b.
      used for emphasizing the main reason or purpose of something
      mostly because: The majority said they work mostly because they need the money.
      mostly for: This machine was used mostly for agricultural work.
      Synonyms and related words
    3. c.
      Tonight’s going to be mostly cloudy.
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a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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