baneful
calamitous
cataclysmal
cataclysmic
catastrophic
consuming
consumptive
deadly
demolishing
demolitionary
depredatory
desolating
destroying
destructive
devastating
disastrous
doomful
fatal
fateful
fratricidal
internecine
nihilist
nihilistic
ravaging
ruining
ruinous
self-destructive
subversive
suicidal
vandalic
vandalish
vandalistic
wasteful
wasting
withering