Crossword Genius

Ed's ever so upset when cut! (7)

Ross

I believe the answer is:

severed

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'cut' is the definition.
(similar in meaning)

'ed's ever so upset' is the wordplay.
'ed's ever' anagrams to 'SEVERED'.
But, I'm unsure how this is indicated.

'when' acts as a link.

Can you help me to learn more?

(Other definitions for severed that I've seen before include "Detached" , "Bisected" , "parted" , "Deserve (anag.)" , "Split" .)

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