Deal in angry speech I ignored (5)
I believe the answer is:
trade
'deal in' is the definition.
('trade' can be a synonym of 'deal in')
'angry speech i ignored' is the wordplay.
'angry speech' becomes 'tirade' (I've seen this before).
'ignored' is a deletion indicator.
'tirade' with 'i' removed is 'TRADE'.
(Other definitions for trade that I've seen before include "Give and receive (blows)" , "Personal occupation" , "Barter, do business" , "Transaction" , "Customers" .)