Definition of what fun! in English:

what fun!

Used to convey that an activity or situation sounds amusing or enjoyable: we’re going to build a snowman—what fun!
More example sentences
  • Then she clapped her hands together in delight and said, ‘Oh, what fun!’
See parent entry: fun

Definition of what fun! in:

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Word of the day dinkum
Pronunciation: ˈdiNGkəm
adjective
(of an article or person) genuine