Definition of fun
(Entry 1 of 3)
1 : what provides amusement or enjoyment specifically : playful often boisterous action or speech full of fun
2 : a mood for finding or making amusement all in fun
4 : violent or excited activity or argument Insults were exchanged and then the fun began.
sometimes funner; sometimes funnest
Definition of fun (Entry 3 of 3)
1 : providing entertainment, amusement, or enjoyment a fun party a fun person to be with
2 : full of fun : pleasant have a fun time
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