Open English Wordnet
Verbs
(v)cancel, strike downdeclare null and void; make ineffective“Cancel the election results”, “strike down a law”
(v)strike downcause to die, especially suddenly“The disease struck down many young men in the village”
(v)fell, drop, strike down, cut downcause to fall by or as if by delivering a blow“strike down a tree”, “Lightning struck down the hikers”