Humiliated Head of Communications was anxious (9)

I believe the answer is:

chastened

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

I can't explain the rest of the clue.

(Other definitions for chastened that I've seen before include "Contrite" , "Subdued by correction" , "taken down a peg or two" , "Admonished" , "Disciplined and humbled" .)

I've seen this clue in The Everyman puzzle in The Observer.

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