deleterious
American Heritage Dictionary:
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del·e·te·ri·ous
(dĕl'ĭ-tîr'ē-əs) 
adj.
Having a harmful effect; injurious: the deleterious effects of smoking.
deleteriousness del'e·te'ri·ous·ness n.
adj.
Having a harmful effect; injurious: the deleterious effects of smoking.
[From Greek dēlētērios, from dēlētēr, destroyer, from dēleisthai, to harm.]
deleteriously del'e·te'ri·ous·ly adv.deleteriousness del'e·te'ri·ous·ness n.
Roget's Thesaurus:
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deleterious
adjective
- Causing harm or injury: bad, detrimental, evil, harmful, hurtful, ill, injurious, mischievous. See help/harm/harmless.
Antonyms by Answers.com:
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deleterious
adj
Definition: harmful, damaging
Antonyms: aiding, assisting, helpful
Word Tutor:
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deleterious
IN BRIEF: Harmful. Also: hurtful, morally or physically.
Using steroids can be deleterious to your health.
LearnThatWord.com is a free vocabulary and spelling program where you only pay for results!
Translations:
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Deleterious
Dansk (Danish)
adj. - skadelig
Français (French)
adj. - nuisible à la (santé)
Deutsch (German)
adj. - schädlich
Ελληνική (Greek)
adj. - ανθυγιεινός, βλαβερός, επιβλαβής
Português (Portuguese)
adj. - deletério
Русский (Russian)
вредный, опасный для здоровья
Español (Spanish)
adj. - nocivo, perjudicial, injurioso
Svenska (Swedish)
adj. - skadlig
中文（简体）(Chinese (Simplified))
有害于, 有毒的
中文（繁體）(Chinese (Traditional))
adj. - 有害於, 有毒的
العربيه (Arabic)
(صفه) مؤذ, ضار بالصحه
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Copyrights:
American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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Roget's Thesaurus
Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 byHoughton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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Word Tutor
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Saunders Veterinary Dictionary
Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.
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