Person who practises self-denial as a spiritual discipline (7)

I believe the answer is:

ascetic

(Other definitions for ascetic that I've seen before include "One who practises extreme self-discipline" , "Severely disciplined" , "One practices self-denial as a spiritual discipline" , "Austere, abstinent" , "Austere, Spartan" .)

I've seen this clue in The Irish Times.

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