Scruffy men inwardly turning to passion (4-5)
I believe the answer is:
moth-eaten
'scruffy' is the definition.
(I've seen this before)
'men inwardly turning to passion' is the wordplay.
'inwardly' means one lot of letters goes inside another (I've seen this in other clues).
'turning' indicates an anagram.
'passion' becomes 'heat' (synonyms).
'to' anagrammed gives 'ot'.
'ot'+'heat'='otheat'
'men' placed around 'otheat' is 'MOTH-EATEN'.
(Other definitions for moth-eaten that I've seen before include "Old and worn" , "Shabby" , "Showing severe signs of wear and tear" , "Tatty" , "Threadbare" .)