This garment covers everything (7)

I believe the answer is:

overall

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

'covers everything' is the wordplay.
'covers' becomes 'over' (I can't explain this - if you can you should give a lot more credence to this answer).
'everything' becomes 'all' (all things).
'over'+'all'='OVERALL'

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(Other definitions for overall that I've seen before include "Boilersuit" , "Inclusive" , "On the whole - protective garment" , "Protective garment worn over ordinary clothes" , "Comprehensive - protective garment" .)

I've seen this clue in The Irish News.

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