Crossword Genius

A grimy colonel moved in an efficient way (13)

Ross

I believe the answer is:

ergonomically

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'in an efficient way' is the definition.
I can't judge whether this defines the answer.

'a grimy colonel moved' is the wordplay.
'moved' indicates an anagram.
'a'+'grimy'+'colonel'='agrimycolonel'
'agrimycolonel' anagrammed gives 'ERGONOMICALLY'.

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(Another definition for ergonomically that I've seen is " Designed in a way to minimise physical effort".)

I've seen this clue in The Daily Express.
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