He sees the adventure as ruinous, both in terms of fiscal and foreign policy.
When the mines closed, decades of labor and planning were destroyed after half a life of ruinous work.
Our ruinous trade deficit in energy is largely a failure of will, faulty regulation and lack of proper incentives.
late 14c., "going to ruin," from Old French ruinos (Modern French ruineux) or directly from Latin ruinosus "tumbling down, going to ruin," from ruina (see ruin (n.)). Meaning "causing ruin" is from mid-15c. Related: Ruinously.