Crossword Genius

One side using confusion is camouflaged (2,8)

Ross

I believe the answer is:

in disguise

'is camouflaged' is the definition.
(thesaurus)

'one side using confusion' is the wordplay.
'one' becomes 'i' (Roman numeral).
'confusion' indicates anagramming the letters.
'side'+'using'='sideusing'
'sideusing' anagrammed gives 'ndisguise'.
'i'+'ndisguise'='IN DISGUISE'

I've seen this clue in The Daily Express.
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