Persona non _____ (5)

I think it could be either:

grata

grate

(Other definitions for grate that I've seen before include "Irritate - rasp - fireplace" , "Rasp; fire holder" , "Jar; fireplace" , "Make a harsh rasping sound" , "Great (anag.)" .)

I've seen this clue in the Sydney Morning Herald, the LA Times, The Wall Street Journal, the King Feature Syndicate, the Universal and The New York Times.

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