Crossword Genius

Relative better as an abbess (6,8)

Ross

I believe the answer is:

mother superior

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'abbess' is the definition.
(synonyms)

'relative better as' is the wordplay.
'relative' becomes 'mother' (mother is a kind of relative).
'better as' becomes 'superior' (I've seen this before. I am not sure about the 'as' bit.).
'mother'+'superior'='MOTHER SUPERIOR'

'an' is the link.

Can you help me to learn more?

(Other definitions for mother superior that I've seen before include "head of religious community" , "First among sisters" , "leading nun" , "leader of religious community" .)

I've seen this clue in The Daily Express.
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