harm
ful
Comparative
more harmful
Superlative
most harmful
1
causing damage or negative effects to someone or something
- Smoking is harmful to your health.
- Certain chemicals in cleaning products can be harmful if ingested.
- Excessive exposure to the sun's UV rays can be harmful to your skin.
- Negative self-talk can be harmful to your mental well-being.
- Air pollution from vehicles and factories can be harmful to the environment.
Antonyms: