Having a harmful effect; injurious: the deleterious effects of smoking. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "deleterious" in a sentence
"Having publicly deprecated the impact of fiscal policy and warned of the long term deleterious effects of climbing public debt, of course, the Federal Reserve and/or the Bank of England cannot now reverse course and credibly back more fiscal stimulus."
"And there are plenty of studies that show that punishment has long-term deleterious effects on children, whereas ...."
"But unfortunately, we've had a cycle of this and it doesn't stop the real problem, and that is simply that the Mexican government has a policy of avoiding domestic reform by exporting human capital at the rate of one or two million illegals a year, and it's in the long term deleterious for Mexico, because they don't face up to the problems they have for providing security and prosperity for their own people."