1
: someone or something that is amusing or enjoyable : an enjoyable experience or person
The game was a lot of fun. [=the game was very enjoyable]
She's fun to be with. = It's fun to be with her. = It's fun being with her. [=her company is enjoyable]
Picnics are great fun [=are very enjoyable] in good weather.
2
: an enjoyable or amusing time
We had fun at the movie. [=we enjoyed ourselves at the movie; we enjoyed the movie]
I can't remember when I've had so much fun.
a vacation filled with fun = a fun-filled vacation
a fun-loving couple [=a couple who love to have fun]
3
: the feeling of being amused or entertained
He plays cards just for fun. = He plays cards just for the fun of it.
Sickness takes all the fun out of life.
sometimes funner; sometimes funnest
always used before a noun
informal
: providing amusement : amusing or enjoyable
Our vacation was a fun time.
She's a fun person to be with.
The park is a fun place to visit.
We had a fun time at the movie.
funs; funned; funning
US, informal
: to speak or act in a way that is not serious
I don't want you to get angry; I was only funning. [=(more commonly) joking, fooling]
He's just funning with you.
Cite this Entry
“Fun.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/fun. Accessed 15 Apr. 2026.
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