Prophetic RC HQ ejects a nun finally (5)

I believe the answer is:

vatic

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'prophetic' is the definition.
(similar in meaning)

I can't explain the remainder of the clue.

(Other definitions for vatic that I've seen before include "as a prophet" , "Inspired" , "Prophetic" , "Predicting" , "about prophecy" .)

I've seen this clue in The Times.

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