Like clumsy words he refined with Collins (3-6)

I believe the answer is:

ill-chosen

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'like clumsy words' is the definition.
The answer and definition are not the same part of speech.

'he refined with collins' is the wordplay.
'refined with' is an anagram indicator.
'he' with its letters anagrammed with 'collins' gives 'ILL-CHOSEN'.

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I've seen this clue in The Times and The Sunday Times.

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