Very smutty, perhaps, and blunt in speech, getting excluded (11)
I believe the answer is:
'excluded' is the definition.
(blackball can mean to exclude or block)
'very smutty perhaps and blunt in speech' is the wordplay.
'very smutty perhaps' becomes 'black' (smut or soot is black).
'and' means one lot of letters go next to another.
'blunt' becomes 'bald' (bald can mean blunt or brazen).
'in speech' shows a homophone (sound like).
'bald' is a homophone of 'balled'.
'getting' acts as a link.