IPA: /hɪˈlɛrɪəsli/
KK: /hɪˈlɛrɪəsli/
In a way that is very funny or amusing.
The comedian told the story hilariously, making everyone laugh.
Hilariously → It is formed from "hilaris" (from Latin, meaning cheerful or merry) and the suffix "-ly" (meaning in a manner of). The word "hilariously" means in a manner that is cheerful or amusing, often to the point of laughter.
Think of 'hilaris' meaning cheerful — this helps you remember that 'hilariously' describes something done in a cheerful or funny way.