Ruinous

Part of speech: adjective (a.)

1. Causing, or tending to cause, ruin; destructive; baneful; pernicious; as, a ruinous project. After a night of storm so ruinous. Milton.

2. Characterized by ruin; ruined; dilapidated; as, an edifice, bridge, or wall in a ruinous state.

3. Composed of, or consisting in, ruins. Behold, Damascus . . . shall be a ruinous heap. Isa. xvii. 1.

Synonyms: Dilapidated; decayed; demolished; pernicious; destructive; baneful; wasteful; mischievous. Ru"in*ous*ly, adv. Ru"in*ous*ness, n.