They keep shops freshly smartened (9)

I believe the answer is:

tradesmen

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'they keep shops' is the definition.
The definition suggests an adverb but the answer is not.

'freshly smartened' is the wordplay.
'freshly' indicates an anagram.
'smartened' is an anagram of 'TRADESMEN'.

Can you help me to learn more?

(Other definitions for tradesmen that I've seen before include "one in business" , "Retailers" , "Smartened up like skilled male workers" , "Smartened up like skilled workmen" , "People selling things" .)

I've seen this clue in The Globe and Mail.

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