Scruffy beard hater is agitated (10)
I believe the answer is:
threadbare
'scruffy' is the definition.
(thesaurus)
'beard hater is agitated' is the wordplay.
'is agitated' is an anagram indicator.
'beard'+'hater'='beardhater'
'beardhater' with letters rearranged gives 'THREADBARE'.
(Other definitions for threadbare that I've seen before include "poor" , "deprived of nap" , "Ragged" , "the worse for wear" , "Thin, tattered, worn out" .)