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fun

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noun [uncountable] fun pronunciation in American English /fʌn/
  1. enjoyment, especially from an activity that is not important or serious
    have fun:

    We haven't had such fun for years.

    great/good fun:

    We had great fun comparing our baby pictures.

    a lot of fun/lots of fun:

    The kids had a lot of fun with that old tent.

    a little fun:

    It was just a little harmless fun.

    1. a.
      an enjoyable activity

      Spending money sure is fun!

      That was fun, wasn't it?

      Science can be fun.

      be good/great fun:

      Do come, it'll be good fun.

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