Definitions for "Ruinous"
causing injury or blight; especially affecting with sudden violence or plague or ruin; "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"
Characterized by ruin; ruined; dilapidated; as, an edifice, bridge, or wall in a ruinous state.
Causing, or tending to cause, ruin; destructive; baneful; pernicious; as, a ruinous project.
extremely harmful; bringing physical or financial ruin; "a catastrophic depression"; "catastrophic illness"; "a ruinous course of action"
Keywords:  composed, consisting
Composed of, or consisting in, ruins.