Minister is tense, having got nothing right (6)
I believe the answer is:
pastor
'minister' is the definition.
('pastor' can be a synonym of 'minister')
'tense having got nothing right' is the wordplay.
'tense' becomes 'past' (past is a kind of tense).
'having got' means one lot of letters go next to another.
'nothing' becomes 'o' (looks like zero - 0).
'right' becomes 'r' (common abbreviation).
'past'+'o'+'r'='PASTOR'
'is' is the link.
(Other definitions for pastor that I've seen before include "Minister of religion" , "To spar with clergyman" , "Flock's leader" , "Minister; shepherd" , "Padre perhaps" .)