IPA: /hɪˈlɛr.i.əs/
KK: /hɪˈlɛrɪəs/
Something that is very funny and makes people laugh a lot.
The comedian told a hilarious joke that had everyone in stitches.
Hilarious → It is formed from "hilaris" (from Latin, meaning cheerful or merry) and the suffix "-ous" (meaning full of). The word "hilarious" means full of cheer or causing great amusement.
Think of the Latin word for cheerful, 'hilaris', to remember that 'hilarious' means something that is full of cheer and makes you laugh.