Out, but certainly not about? (7)

I believe the answer is:

sedated

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'out' is the definition.
(I've seen this in another clue)

I don't understand the remainder of the clue.

(Other definitions for sedated that I've seen before include "Calmed with drugs" , "Given a tranquilliser" , "Drugged" , "Given calming drugs" , "kept calm" .)

I've seen this clue in The Sun.

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