Not French fathers! (3)

I believe the answer is:

pas

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'fathers' is the definition.
(pa is a kind of father)

I cannot understand how the rest of the clue works.

(Other definitions for pas that I've seen before include "Dance step" , "Ballet duet" , "Dancing step" , "step on stage" , "Type of sausage" .)

I've seen this clue in the Evening Standard.

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