Aggressively macho, but going to church
I believe the answer is:
butch
'aggressively macho' is the definition.
'butch' can be an answer for 'macho' (I know that macho can be written as butch). I'm not certain of the 'aggressively' bit.
'but going to church' is the wordplay.
'going to' is a charade indicator (letters next to each other).
'church' becomes 'ch' (common abbreviation).
'but'+'ch'='BUTCH'
Can you help me to learn more?
(Other definitions for butch that I've seen before include "Acting as a male (colloq.)" , "Macho" , "Markedly masculine" , "Tough" , "Aggressively masculine" .)