Peculiarity of noisy cry as I'd roused (12)
I believe the answer is:
idiosyncrasy
'peculiarity' is the definition.
(I know that idiosyncrasy is a type of peculiarity)
'noisy cry as i'd roused' is the wordplay.
'roused' indicates anagramming the letters (I've seen this in other clues).
'noisy'+'cry'+'as'+'id'='noisycryasid'
'noisycryasid' anagrammed gives 'IDIOSYNCRASY'.
'of' is the link.
(Other definitions for idiosyncrasy that I've seen before include "Distinctive mannerism" , "Peculiarity" , "Foible" , "Oddity" , "Quirk" .)