uproarious

Short definition from Wiktionary

Adjective

1. 1
   Causing, or likely to cause, an uproar.
2. 2
   Characterized by uproar, that is, loud, confused noise, or by noisy and uncontrollable laughter.
3. 3
   Extremely funny; hilarious.
4. 4
   In a mess; dishevelled, untidy.