zany

/ˈzeɪni/
adjective
  1. Amusingly unusual or silly in a playful, crazy way.
    • She wore a zany hat covered in feathers and flashing lights to the party.
    • The clown's zany antics made the children laugh uncontrollably.
    • The movie was full of zany characters and ridiculous situations.
Antonyms
noun
  1. A person who behaves in a silly or clownish way.
    • Every office has a zany who lightens the mood with funny comments.
    • The class zany always had everyone in stitches with his jokes.
    • In the play, he played the zany who tripped over everything.