Ready for a bath? (6)

I believe the answer is:

unclad

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'ready' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?

I don't understand the remainder of the clue.

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(Other definitions for unclad that I've seen before include "Uncovered" , "Naked" , "Not wearing clothes" , "nude" , "without clothing" .)

I've seen this clue in the Evening Standard.

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