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Dictionary definition for: Harmful

1. (a) injurious to physical or mental health; "noxious chemical wastes" "noxious ideas"

2. (s) able or likely to do harm

3. (a) causing or capable of causing harm; "too much sun is harmful to the skin" "harmful effects of smoking"

4. (a) constituting a disadvantage

5. (s) contrary to your interests or welfare; "adverse circumstances" "made a place for themselves under the most untoward conditions"

6. (s) tending to cause great harm

WordNet 2.1 Copyright Princeton University. All rights reserved.