Dad’s wrong to take one to court! (6)

I believe the answer is:

addict

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'dad's wrong to take one to court' is the definition.
I can't tell whether this definition defines the answer.

'dad's wrong to take one to court' is the wordplay.
'wrong' indicates an anagram.
'to take' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'to court' becomes 'ct'.
'dad' anagrammed gives 'add'.
'add'+'i'+'ct'='ADDICT'

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(Other definitions for addict that I've seen before include "Bricklayer's tool" , "One unable to kick habit" , "One who's hooked" , "Make dependent" , "One who is dependent on something, alcohol say" .)

I've seen this clue in the Evening Standard.

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