Nearby Words
s
adjective
1.
injurious to health: deleterious gases.
2.
harmful; injurious: deleterious influences.
Origin:
1635–45; < Greek dēlētḗrios destructive, adj. derivative of dēlētḗr destroyer, equivalent to dēlē- variant stem of dēleîsthai to hurt, injure + -tēr agent suffix + -ios adj. suffix; see -ious
1635–45; < Greek dēlētḗrios destructive, adj. derivative of dēlētḗr destroyer, equivalent to dēlē- variant stem of dēleîsthai to hurt, injure + -tēr agent suffix + -ios adj. suffix; see -ious
Related forms
del·e·te·ri·ous·ly, adverb
del·e·te·ri·ous·ness, noun
non·del·e·te·ri·ous, adjective
non·del·e·te·ri·ous·ly, adverb
non·del·e·te·ri·ous·ness, noun
EXPANDSynonyms
2. pernicious, hurtful, destructive; noxious.
2. pernicious, hurtful, destructive; noxious.
Antonyms
2. beneficial.
2. beneficial.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Deleterious
is a GRE word you need to know.
So is complaisant. Does it mean:
| exhibiting a desire to please |
| a sinuous, spiraling, undulating, or serpentine line or linear motif, often used in the Fine Arts |
Example Sentences
- But that's not to say that they couldn't have some deleterious health effects.
- In animals, individuals who have suffered deleterious changes are removed by the process of natural selection.
- The result: The deleterious insects emerged more pestilent and plentiful than ever.
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
deleterious
1640s, from Gk. deleterios, from deleter "destroyer," from deleisthai "to hurt, injure."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
deleterious del·e·te·ri·ous (děl'ĭ-tēr'ē-əs)
adj.
Having a harmful effect; injurious.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
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