Arrest topless men, disgusting (7)
I believe the answer is:
engross
'arrest' is the definition.
(thesaurus)
'topless men disgusting' is the wordplay.
'topless' means to remove the first letter.
'disgusting' becomes 'gross' (I've seen this before).
'men' with its first letter taken away is 'en'.
'en'+'gross'='ENGROSS'
(Other definitions for engross that I've seen before include "Engulf" , "Rivet" , "grab attention" , "Completely absorb" , "Totally absorb the attention of" .)