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harmful

adjective B2 Neutral

Meaning

The term "harmful" describes something that can cause damage or injury to people, animals, or the environment.
💡 A common mistake is to confuse "harmful" with "harmless," which means not causing any harm.

Example Sentences

Is smoking harmful to your health in the long term ?
Prolonged exposure to harmful chemicals can affect human health .
Smoking is harmful to your health and should be avoided .

Word in Context

Anna was cleaning the kitchen before guests arrived , and she reached for a strong detergent under the sink . She read the label carefully because some ingredients can be harmful if they mix with other cleaners or if you breathe the fumes . To be safe , she opened the window and put on gloves , then used a small amount and rinsed the surfaces well . After cleaning , she took the empty bottle to the recycling bin and decided to buy a milder product next time .

Common Phrases

harmful effects harmful substances harmful behavior

Synonyms

Antonyms

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