Cut off some Xmas eve revelry (5)

I believe the answer is:

sever

'cut off' is the definition.
(to sever is to cut)

'some xmas eve revelry' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'SEVER' is hidden in the letters of 'xmas eve revelry'.

(Other definitions for sever that I've seen before include "Cut from a whole" , "Cut off suddenly" , "split" , "Cut completely" , "Detach" .)

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

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