Embarrassing blunder (5)

I think it could be either:

Which length description are you looking for?:

4,3

faux pas

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

This is the entire clue.

(Other definitions for faux pas that I've seen before include "Social blunder" , "Bloomer" , "Social gaffe" , "Social error" , "Embarrassing blunder" .)

I've seen this clue in The Guardian.

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