Meaning of the word hilarity in English

What does hilarity mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

hilarity

US /hɪˈler.ə.t̬i/
UK /hɪˈlær.ə.ti/

Noun

a situation in which people laugh very loudly and think something is very funny:

Example:
What was all the hilarity about?