IPA: //ʌˈprɔːriəsli//
KK: /ʌˈproʊrɪəsli/
In a way that is very funny or causes a lot of laughter and excitement.
The comedian told jokes that made the audience laugh uproariously.
Uproariously → It is formed from "uproar" (from Middle English *uprore*, meaning a disturbance or commotion) and the suffix "-ously" (meaning in a manner of). The word "uproariously" means in a manner that causes or is characterized by a loud disturbance or commotion.
Think of a loud 'disturbance' ('uproar') happening 'in a manner' ('-ously') that makes it uproarious.