Maybe I'd alarm this officer (7)

I believe the answer is:

admiral

'this officer' is the definition.
(admiral is a kind of officer)

'maybe i'd alarm' is the wordplay.
'maybe' is an anagram indicator.
'id'+'alarm'='idalarm'
'idalarm' anagrammed gives 'ADMIRAL'.

(Other definitions for admiral that I've seen before include "Commander of the fleet or butterfly" , "Naval chief" , "Naval high-up" , "[NELSON] perhaps" , "Highest naval rank" .)

I've seen this clue in the Evening Standard.

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