Use foul language (4)

I think it could be either:

Which length description are you looking for?:

cuss

'use foul language' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for cuss that I've seen before include "Blaspheme" , "Stubborn person" , "Use bad language (informal)" , "Swear (slang)" , "Oath; (annoying sort of) person" .)

I've seen this clue in The Washington Post, the King Feature Syndicate and the L.A. Times Daily.

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