Crossword Genius

Mistake for every footwear item (7)

Ross

I believe the answer is:

slipper

'footwear item' is the definition.
(I've seen this before)

'mistake for every' is the wordplay.
'mistake' becomes 'slip' (slip is a kind of mistake**).
'for every' becomes 'per' (I've seen this before).
'slip'+'per'='SLIPPER'

(Other definitions for slipper that I've seen before include "Accident-prone" , "Indoor shoe" , "Casual footwear" , "Light shoe" , "Shoe worn indoors" .)

I've seen this clue in The Mirror.
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