harmful

adjective
UK: /ˈhɑːmfəl/
US: /ˈhɑːrmfəl/

  1. Causing or likely to cause harm.

    1. Smoking is harmful to your health.
    2. The doctor warned about the harmful effects of prolonged exposure to the sun without protection.

  2. Something that is dangerous and could hurt you.

    1. These chemicals are very harmful if swallowed.
    2. Exposure to radiation can be extremely harmful causing long-term health issues and genetic mutations.

Synonyms

detrimental pernicious injurious deleterious damaging

Frequently Asked Questions

The word "harmful" in English means: Causing or likely to cause harm., Something that is dangerous and could hurt you..

The phonetic transcription of "harmful" is /ˈhɑːmfəl/ in British English and /ˈhɑːrmfəl/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "harmful": detrimental, pernicious, injurious, deleterious, damaging.

Example usage of "harmful": "Smoking is harmful to your health.". More examples on the page.