Go wrong
'go wrong' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for err that I've seen before include "'To . . . is human, to forgive divine'" , "Be mistaken" , "have an affair?" , "Miss the mark" , "'to... is human,to forgive divine'" .)
'go wrong' is the definition.
(to sin is to do wrong)
This is the entire clue.
(Other definitions for sin that I've seen before include "Depravity" , "Wickedness" , "Immorality" , "Transgress" , "Immoral action" .)
'go wrong' is the definition.
(synonyms)
This is all the clue.
(Other definitions for miscarry that I've seen before include "(Of a plan) fail" , "(Plan) go wrong" .)
'go wrong' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for backfire that I've seen before include "Go wrong" , "explosion" , "Have the opposite and damaging effect to that intended" , "Boomerang" , "Cause a result opposite to that intended" .)
'go wrong' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for malfunction that I've seen before include "Go wrong" , "Fail" , "Break down" , "Failure (of equipment)" .)