Attack a good man in charge who is pompous (9)
I believe the answer is:
bombastic
'is pompous' is the definition.
(thesaurus)
'attack a good man in charge' is the wordplay.
'attack' becomes 'bomb' (bombing is a kind of attacking**).
'good man' becomes 'st'.
'in charge' becomes 'ic'.
'bomb'+'a'+'st'+'ic'='BOMBASTIC'
'who' acts as a link.
(Other definitions for bombastic that I've seen before include "Pompous -- inflated" , "I cast bomb, being pompous in speech" , "Pretentious" , "Declamatory, ostentatiously lofty" , "High-flown" .)