Nullified (9)
(Other definitions for cancelled that I've seen before include "Annulled" , "Called off" , "Revoked or terminated" , "No longer scheduled" , "Anulled" .)
(Other definitions for abrogated that I've seen before include "undone" , "Revoked formally" .)
'nullified' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for negated that I've seen before include "Made ineffective" , "Denied" , "Nullified" , "Contradicted" , "Discredited" .)