abate
abolish
abrogate
adulterate
alloy
annihilate
annul
bastardize
blemish
bring to nothing
brutalize
buffer
cancel
cancel out
canker
cheapen
coarsen
come to nothing
confound
contaminate
corrupt
corrupted
counterbalance
damage
debase
debauch
debauched
defile
deflower
degenerate
degrade
delete
demoralize
denature
deprave
depraved
depreciate
depress
desecrate
despoil
destroy
devalue
diminish
distort
downgrade
frustrate
harm
alter
change
modify
vitiated
vitiates
vitiating
vice
vicious