Character often dropped (5)

I believe the answer is:

aitch

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'character' is the definition.
(the spelled out name of the letter H)

I don't understand the remainder of the clue.

(Other definitions for aitch that I've seen before include "that I will immediately succeed" , "bone" , "first bit of hymn?" , "character leading heroes" , "Letter sound that's often dropped?" .)

I've seen this clue in The Mirror and The Daily Express.

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