Synonyms for Uproarious:

adj.

boisterous (adjective)
rackety, disorderly.
hilarious (adjective)
funny, amusing, comical, humorous.
loud (adjective)
deafening, clangorous, strident, blatant, blasting, roaring, sonorous, clamorous, boisterous, loud, fortissimo, booming, tumultuous, resounding, bellowing, earsplitting, vociferous, blaring, Ear-splitting, noisy.
very funny (adjective)
hilarious, clamorous, noisy, wild, boisterous, loud, confused.
violent (adjective)
frenzied, furious, brawling, broiling, fierce, abusive, vehement, raging, wild, outrageous, ferocious, tumultuous, violent, fighting, assaultive, intense, savage.

n.

riotous, can't hear yourself think, resounding, shrill, Ear-splitting, piercing. funny, amusing, hysterical, comical, playful, comic, priceless, wry. noisy (noun)
disorderly, confused.
uproarious (noun)
noisy, humorous, rip-roaring, screaming, hilarious, rackety, humourous.

Other synonyms:

hysterical, Ear-splitting, funny. piercing. Other relevant words:
humourous, confused, disorderly, resounding, riotous, hysterical, screaming, shrill, funny, rackety, rip-roaring, comic, piercing, wry, comical, priceless, playful, hilarious, Ear-splitting, amusing, humorous.

Usage examples for uproarious

  1. This episode, trifling though it was, served rather to increase than to diminish my nervousness; but upon my entering the assembly hall, where my young friends were gathered together awaiting my coming, all sense of trepidation vanished, so spontaneous and uproarious was their greeting. – Fibble, D. D. by Irvin Shrewsbury Cobb
  2. " I suppose," said Mrs. Vertrees, much injured, " that Mary will have an uproarious time at my funeral. – The Turmoil A Novel by Booth Tarkington
  3. The tonneau squirmed with uproarious youth. – The Lookout Man by B. M. Bower