Stray from the morally higher responsibility (3)
I believe the answer is:
err
'stray' is the definition.
(to err is to stray or go wrong)
'from the morally higher responsibility' is the wordplay.
'from' indicates a hidden word.
'ERR' is hidden in the letters of 'morally higher responsibility'.
(Other definitions for err that I've seen before include "Go astray" , "'to... is human,to forgive divine'" , "Be inaccurate" , "Be incorrect" , "Drop a clanger" .)