look up any word, like thot:
 
1.
Pronunciation: hi-lar-ee-oos (use British accent)

Adjective

A version of the word hilarious which means hysterical or very funny. It is often referred to as the older brother of hilarious. It basically means very hilarious.
I saw Sally last night and she told a hilarioose joke, it was incredibly funny.
by Julian Ochoa August 10, 2007