noun

1. Amusement, enjoyment or pleasure

2. Playful, often noisy, activity.

Synonyms: amusement, diversion, enjoyment, laugh, pleasure, boisterousness, horseplay, rough and tumble

verb

1. To tease, kid, poke fun at, make fun of.

   “Hey, don't get bent out of shape over it; I was just funning you.”

adjective

1. Enjoyable, amusing

   “He is such a fun person to be with.”

2. Whimsical, flamboyant

   “This year's fashion style is much more fun than recent seasons.”