No one is turning the Queen more boisterous (7)
I believe the answer is:
noisier
'more boisterous' is the definition.
('noisy' can be similar in meaning to 'boisterous')
'no one is turning the queen' is the wordplay.
'one' becomes 'i' (Roman numeral).
'turning' indicates anagramming the letters.
'the queen' becomes 'er' (Elizabeth Regina**).
'no'+'i'+'is'='noiis'
'noiis' anagrammed gives 'noisi'.
'noisi'+'er'='NOISIER'
(Other definitions for noisier that I've seen before include "more deafening!" , "More of a racket" , "More loud" , "Perhaps more disturbing" , "Louder" .)