ruinous
1. [ adjective ] extremely harmful; bringing physical or financial ruin
Synonyms: catastrophic
Examples:

"a catastrophic depression" "catastrophic illness" "a ruinous course of action"

Related terms: harmful
2. [ adjective ] causing injury or blight; especially affecting with sudden violence or plague or ruin
Synonyms: blasting
Examples:

"the blasting effects of the intense cold on the budding fruit" "the blasting force of the wind blowing sharp needles of sleet in our faces" "a ruinous war"

Related terms: destructive
Similar spelling:   rum_nose
  Runk
  rung
  runic
  Runge
  runch