What's the adjective for ruine? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs ruin and ruinate which may be used as adjectives within certain contexts.
“The state and city have continued on this ruinous course.”
“Potatoes are selling at ruinous prices and the crop is being taken away from the growers without any profit to them for their time, labor, land, and trouble.”
“This building is owned by a State body who have let it go into a ruinous state.”