hilarious
- 1So funny that it makes people laugh a lot.
Like a joke so good that your whole class can't stop laughing.
The comedian's new show was absolutely hilarious from start to finish.
We thought her impression of the teacher was hilarious.
Similarfunny, hysterical, amusing, comical, humorous
- 2Very cheerful and full of fun, laughter, and good spirits.
When the snow day was announced, the children were hilarious with joy, laughing and shouting all morning.
After the team won, the whole bus was hilarious with cheering and songs.
Similarmerry, jolly, jovial, boisterous, giddy
Oppositesomber, gloomy, glum, subdued
Note
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Origin
It comes from the Latin word hilaris, meaning 'cheerful', plus '-ous'. The Latin came from an Ancient Greek word that also meant 'cheerful' or 'merry'.