Crossword Genius

Papal office utterly deep, reportedly? (4,3)

Ross

I believe the answer is:

holy see

I'm a little stuck... Click here to teach me more about this clue!

'papal office' is the definition.
(I've seen this before)

'utterly deep reportedly?' is the wordplay.
'utterly' becomes 'holy' (I can't explain this - if you can you should give a lot more credence to this answer).
'deep' becomes 'sea' (the deep can mean the sea).
'reportedly?' shows a homophone (sound like) (I've seen 'reportedly' mean this).
'sea' sounds like 'see'.
'holy'+'see'='HOLY SEE'

Can you help me to learn more?

(Other definitions for holy see that I've seen before include "Papal office" , "Rome ecclesiastically" , "Sovereign state within Rome" , "The papacy or papal court" , "place where RC governs" .)

I've seen this clue in The Telegraph.
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