Meaning & use
harmful
Causing or likely to cause damage, injury, or harm.
See it in a sentence
Exposure to strong sunlight without protection can be harmful to the skin.
The report warned that the chemical was harmful to fish and other wildlife.
A note on using this word
Harmful is a general term for anything causing damage; 'toxic' or 'hazardous' suggest a more specific or severe danger.
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
Make it your own
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