Crossword Genius

Open with part of Nessun dorma (4)

Ross

I believe the answer is:

undo

'open' is the definition.
(eg opening a bottle)

'part of nessun dorma' is the wordplay.
'part of' indicates the answer is hidden within the clue.
'UNDO' can be found hidden inside 'nessun dorma'.

'with' acts as a link.

(Other definitions for undo that I've seen before include "Unfasten - destroy" , "Open, a knot say" , "Open button or ruin" , "Ruin prospects of; cancel" , "Cause the ruin of, or cancel" .)

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app