Prim, self-righteous (8)

I believe the answer is:

priggish

I believe this clue is a double definition.

'prim' is the first definition.
(synonyms)

'self-righteous' is the second definition.
(I've seen this before)

(Other definitions for priggish that I've seen before include "Self-righteously superior" , "Strait-laced" , "smug" , "Sanctimonious" , "Self-righteously moralistic" .)

I've seen this clue in the Sydney Morning Herald.

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