Crossword Genius

Underwear gaffe (4)

Ross

I believe the answer is:

slip

I believe this clue is a double definition.

'underwear' is the first definition.
(I've seen this before)

'gaffe' is the second definition.
(synonyms)

(Other definitions for slip that I've seen before include "Error - fielder" , "Mistake -- small piece of paper" , "Slide; petticoat" , "Gaffe" , "See 16" .)

I've seen this clue in The Telegraph.
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