Some jackass, ignorant delegate (6)
I believe the answer is:
assign
'delegate' is the definition.
('assign' can be a synonym of 'delegate')
'some jackass ignorant' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'ASSIGN' can be found hidden inside 'jackass ignorant'.
(Other definitions for assign that I've seen before include "Allocate (duties to someone)" , "Give responsibility to" , "Transfer or appoint to" , "Nominate" , "Allot, fix, appoint" .)