Maybe rabbit turned and ran, being disconcerted (7)
I believe the answer is:
ruffled
'being disconcerted' is the definition.
(thesaurus)
'maybe rabbit turned and ran' is the wordplay.
'maybe rabbit' becomes 'fur' (rabbit fur).
'turned' says the letters should be written backwards.
'and' is a charade indicator (letters next to each other).
'ran' becomes 'fled' (I've seen this before).
'fur' written backwards gives 'ruf'.
'ruf'+'fled'='RUFFLED'
(Other definitions for ruffled that I've seen before include "Disturbed the smoothness of, feathers say" , "Disturbed or made uneven - perhaps feathers" , "Frilled" , "Disturbed or tousled, feathers or hair" .)