hilarious (adj.)
- absurd
- amusing
- bizarre
- buxom
- cheerful
- cheery
- comical
- convivial
- droll
- eccentric
- entertaining
- festal
- festive
- frivolous
- funny
- gay
- gladsome
- gleeful
- humorous
- hysterical
- incongruous
- jocular
- jocund
- jolly
- jovial
- joyful
- joyous
- laughable
- ludicrous
- merry
- mirthful
- priceless
- quaint
- quizzical
- rejoicing
- rich
- ridiculous
- risible
- rollicking
- screaming
- uproarious
- whimsical
- witty