ruin.noun
total destruction or disintegration, either physical, moral, social, or economic; the remains of something destroyed, disintegrated, or decayed (studied the ruins of ancient Greece)
ruin, ruined, ruining, ruins.verbs
transitive verb sense.to destroy completely; demolish
to harm irreparably; to reduce to poverty or bankruptcy
intransitive verb sense.to fall into ruin
ruinable.adjective
ruiner.noun

ruinous.adjective
causing or apt to cause ruin; destructive; falling to ruin; dilapidated or decayed
ruinously.adverb
ruinousness.noun

ruthless.adjective
having no compassion or pity; merciless: ruthless cruelty; ruthless opportunism
ruthlessly.adverb
ruthlessness.noun

rescind, rescinded, rescinding, rescinds.transitive verbs
to make void; repeal or annul
rescindable.adjective
rescinder, rescindment.nouns