Abandoned liberated nude in arrest (12)

Ross

I believe the answer is:

unrestrained

I'm a little stuck... Click here to teach me more about this clue!

'abandoned' is the definition.
(I've seen this before)

'liberated nude in arrest' is the wordplay.
'nude in arrest' can be anagrammed to 'UNRESTRAINED'.
Though, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for unrestrained that I've seen before include "Unchecked" , "Not restricted" , "Frantic" , "Wild" , "Not held back" .)

I've seen this clue in The Telegraph.

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