Captivated by captain getting injured (7)

I believe the answer is:

charmed

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'captivated' is the definition.
(synonyms)

'captain getting injured' is the wordplay.
'captain getting' becomes 'c' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'injured' becomes 'harmed' (similar in meaning).
'c'+'harmed'='CHARMED'

'by' acts as a link.

Can you help me to learn more?

(Other definitions for charmed that I've seen before include "Entranced" , "Unusually lucky" , "Enchanted" , "blessed by fortune" .)

I've seen this clue in the Sydney Morning Herald.

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