Noisy new trio love us (7)
I believe the answer is:
riotous
'noisy' is the definition.
(thesaurus)
'new trio love us' is the wordplay.
'new' indicates an anagram.
'love' becomes 'o' (love means zero in tennis).
'trio' with letters rearranged gives 'riot'.
'riot'+'o'+'us'='RIOTOUS'
(Other definitions for riotous that I've seen before include "Unrestrained like crowd running amok (7)" , "Hilariously funny" , "Wild, disorderly" , "Rowdy" , "Behaving wildly" .)