Boisterous, disorderly (5)
I believe the answer is:
rowdy
I believe this is a double definition.
'boisterous' is the first definition.
(I've seen this before)
'disorderly' is the second definition.
(similar in meaning)
(Other definitions for rowdy that I've seen before include "Uproarious" , "yob" , "Boisterous" , "Noisy and disorderly" , "Loud and disorderly" .)