Harmful is an adjective that comes in handy when you're talking about things that cause injury to someone or damage something. Burning coal can be harmful to the environment, and eating too …

We try to stress the things that could be inappropriate, things that could be harmful or embarrassing for you, your family or your team.

Definition of harmful adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

harm•ful /ˈhɑrmfəl/ adj. causing or capable of causing harm. harm•ful•ly, adv. harm•ful•ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2026 …

harmful If something is harmful to someone or harmful for them, it has a bad effect on them. Too much salt can be harmful to a young baby. Potassium could be harmful for those with impaired kidneys. …

Apr 29, 2026 · Causing or likely to cause harm or damage; injurious. Wear a hat to protect your skin from harmful sunlight. Smoking is harmful to the lungs. Burning fossil fuels is harmful to the …

Harmful refers to something that is capable of causing damage, injury, or has a detrimental effect on one's health, well-being, or the environment. Harmful is a rock band from Frankfurt, Germany, …

The meaning of HARMFUL is of a kind likely to be damaging : injurious. How to use harmful in a sentence.

Something that is harmful has a bad effect on something else, especially on a person's health. ...the harmful effects of smoking.

Harmful definition: Causing or capable of causing harm; injurious.