Crossword Genius

Colleagues make worst mistake (9)

Ross

I believe the answer is:

workmates

'colleagues' is the definition.
(I know this)

'make worst mistake' is the wordplay.
'mistake' indicates an anagram.
'make'+'worst'='makeworst'
'makeworst' anagrammed gives 'WORKMATES'.

(Another definition for workmates that I've seen is " Firm friends possibly".)

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