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Hermit - a person having doubts spending penny (7)

Ross

I believe the answer is:

ascetic

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

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(Other definitions for ascetic that I've seen before include "Severely disciplined" , "Self-denier" , "Austere, abstinent" , "Austere type" , "Self-denying, not allowing oneself luxuries" .)

I've seen this clue in The Telegraph.
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