Crossword Genius

One toils, getting badly treated — it's most stupid (8)

Ross

I believe the answer is:

looniest

'most stupid' is the definition.

'one toils getting badly treated' is the wordplay.
'getting badly treated' is an anagram indicator.
'one'+'toils'='onetoils'
'onetoils' anagrammed gives 'LOONIEST'.

'it's' is the link.

I've seen this clue in The Times.
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