Manly scourge lashes reverend individual (7)
I believe the answer is:
laddish
'manly' is the definition.
(laddish can mean manly or macho)
'scourge lashes reverend individual' is the wordplay.
'scourge' becomes 'lash' (both can mean a whip).
'lashes' indicates putting letters inside.
'reverend' becomes 'DD' (Doctor of Divinity).
'individual' becomes 'i' (Roman numeral for one).
'dd'+'i'='ddi'
'lash' enclosing 'ddi' is 'LADDISH'.
(Other definitions for laddish that I've seen before include "Youthfully boisterous" , "Boisterously macho" , "Given to immature and aggressive behaviour" , "displaying blokey tendencies" , "How like a boy" .)