Farcical and Humorous are the only two correctly spelled 8 letter words meaning funny.
A farce is a comedy which aims to entertain the audience by means of unlikely, extravagant, and improbable situations, disguise and mistaken identity, and verbal humor of varying degrees of sophistication.
Humour (British English spelling) or humor is the tendency of particular cognitive experiences to provoke laughter and provide amusement.
humorous
Mirthful is 8 letters and a synonym of funny.
Humorous.
Amused is a funny adjective. Antsy is a funny adjectives.
Absurd / Amusing / Antic (n.)
The word funny is an adjective. It describes someone who is amusing.
Humorous, amusing,
Hilarious, laughable, hysterical, amusing, comical
amusing, hilarious, humorous, comical, witty, side-splitting
hilarious amusing strange unusual intriguing odd
"Humerouse" appears to be a misspelling of the word "humorous," which means funny or amusing.
You spelled it correctly:" amusement" (something done for fun or diversion).
amusing