harmful

/hˈɑːmfə‍l/

/ˈhɑɹmfəɫ/

harmful

causing damage or negative effects to someone or something

antonyms : harmless

Examples

1. The body's immune system protects against harmful bacteria and viruses.

2. She uses organic gardening methods in her garden, avoiding harmful chemicals.

3. The government passed a law to regulate a harmful substance after it had already caused significant damage to public health.

4. It was found that the product contained harmful chemicals that were not listed on the label.