
adj.
Causing or capable of causing harm; injurious.
harmfully harm'ful·ly adv.
harmfulness harm'ful·ness n.
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American Heritage Dictionary:
harm·ful |

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Roget's Thesaurus:
harmful |
adjective
Antonyms by Answers.com:
harmful |
Definition: injurious, hurtful
Antonyms: aiding, assisting, helpful, nice, unharmful
Word Tutor:
harmful |
Inhumanity is harmful in every age.
— Cicero
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![]() | 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. Read more |
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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. Read more |
![]() | Antonyms by Answers.com. © 1999-present by Answers Corporation. All rights reserved. Read more | |
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