Fun definition

(1) Activities that are enjoyable or amusing

"I do it for the fun of it"

"He is fun to have around"

(2) Violent and excited activity

"She asked for money and then the fun began"

"They began to fight like fun"

(3) A disposition to find (or make) causes for amusement

"Her playfulness surprised me"

"He was fun to be with"

(4) Verbal wit or mockery (often at another's expense but not to be taken seriously)

"He became a figure of fun"

"He said it in sport"