destructive
baneful
black
calamitous
cataclysmal
catastrophic
consuming
consumptive
convulsive
deadly
demolishing
demolitionary
depredatory
desolating
destroying
devastating
dire
disastrous
doomful
fatal
fateful
fratricidal
grievous
herky-jerky
insurrectionary
internecine
jerky
nihilist
nihilistic
orgasmic
paroxysmal
radical
ravaging
revolutional
revolutionary
revulsionary
revulsive
ruining
ruinous
seismic
self-destructive
spasmodic
spastic
subversionary
subversive
suicidal
sweeping
tragic
transilient
upheaving
cataclysm
cataclysmic variable star
all-out
climactic
concussive
devastate
ear-splitting
epochal
head-on
horrendous
horrific
imminent
intrauterine
irretrievable
life-threatening
matter-antimatter
momentous
resistless
tectonic
thermonuclear
titanic
organismic