Crossword Genius

Stub toes carelessly: most stupid (8)

Ross

I believe the answer is:

obtusest

'most stupid' is the definition.
(the most obtuse or stupid)

'stub toes carelessly' is the wordplay.
'carelessly' indicates anagramming the letters.
'stub'+'toes'='stubtoes'
'stubtoes' anagrammed gives 'OBTUSEST'.

I've seen this clue in The Guardian.
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