More pristine (5)

I believe the answer is:

purer

'more pristine' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for purer that I've seen before include "cleaner" , "More chaste" , "Less adulterated" , "Less immoral" , "more clean" .)

I've seen this clue in the LA Times, the L.A. Times Sunday, the L.A. Times Daily and the Newsday.com.

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