Sin out of terror (3)

I believe the answer is:

err

'sin' is the definition.
(to sin is to err morally)

'out of terror' is the wordplay.
'out of' indicates a hidden word.
'ERR' is hidden within 'terror'.

(Other definitions for err that I've seen before include "Be inaccurate" , "have an affair?" , "Make mistake in Canberra" , "Sin" , "Make a wrong move" .)

I've seen this clue in The Mirror.

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