Crossword Genius

Dad is one looking untidy — given a coat (8)

Ross

I believe the answer is:

anodised

'given a coat' is the definition.
(anodise means to coat an anode in metal)

'dad is one looking untidy' is the wordplay.
'looking untidy' indicates anagramming the letters (a messy version of the letters).
'dad'+'is'+'one'='dadisone'
'dadisone' anagrammed gives 'ANODISED'.

(Another definition for anodised that I've seen is " Coated (aluminium)".)

I've seen this clue in The Times.
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