- injurious to health: deleterious gases.
- harmful; injurious: deleterious influences.
Origin of deleterious
SynonymsSee more synonyms for deleterious on Thesaurus.com
Examples from the Web for deleterious
But it is indeed in Uttar Pradesh that we see the deepest sympathy for this deleterious machismo.How India’s Elites Encourage Rape
July 15, 2014
Drugs are becoming more powerful with prescription painkillers used to enhance effect and prolong a deleterious pleasure.Heroin: America’s Silent Assassin
Dr. Anand Veeravagu, MD, Robert M. Lober, MD, PhD
February 3, 2014
But the truth is that they have real and deleterious effects on conservative politics.D'Souza's Never-Ending Right-Wing Hustle
January 27, 2014
Corporations exerted an unchecked and deleterious influence on the lives of workers.Impeach the Supreme Court Justices If They Overturn Health-Care Law
David R. Dow
April 3, 2012
How much of these problems can be credited to the deleterious effects of enormous inherited wealth, we will never know.The Johnson Family Tears
January 7, 2010
But it is also true that some of the most deleterious books we have are romances.
Moreover, slavish imitation in any art has a deleterious influence.Style in Singing
W. E. Haslam
I hope the bill will pass without any deleterious amendments.Mark Twain's Speeches
Mark Twain (Samuel Clemens)
War is unlikely to begin in India, and the climate is deleterious in the summer months.The Dark Tower
The vapor of charcoal in a close room is so deleterious as to cause death.Miss Leslie's Lady's New Receipt-Book
- harmful; injurious; hurtful
Word Origin and History for deleterious
1640s, from Medieval Latin deleterius, from Greek deleterios "noxious," from deleter "destroyer," from deleisthai "to hurt, injure." Related: Deleteriously; deleteriousness.
- Having a harmful effect; injurious.