Crossword Genius

Prioress is terrified about a nun (6)

Ross

I believe the answer is:

sister

'a nun' is the definition.
(a nun might be called sister)

'prioress is terrified about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'SISTER' can be found hidden inside 'prioress is terrified'.

(Other definitions for sister that I've seen before include "habits' - one who has them" , "A kinswoman" , "woman in hospital" , "Tender" , "twin?" .)

I've seen this clue in the Sydney Morning Herald.
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