Held up, rising before editor's dressed (7)

I believe the answer is:

enrobed

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'held up rising before' is the definition.
I can't tell whether this defines the answer.

'editor's dressed' is the wordplay.
'editor's' becomes 'en' (I can't justify this - if you can you should give a lot more credence to this answer).
'dressed' becomes 'robed' ('robed' can be a synonym of 'dressed').
'en'+'robed'='ENROBED'

Can you help me to learn more?

(Other definitions for enrobed that I've seen before include "Formally dressed" , "Ceremonially dressed" .)

I've seen this clue in The Guardian.

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