有害

有害 means 'harmful' or 'dangerous,' describing something that causes damage or negative effects. It is often used to describe substances, actions, or conditions that are detrimental to health, safety, or well-being.

The character 有 (yǒu) means 'to have' or 'there is,' and 害 (hài) means 'harm' or 'injury.' Together, they form a compound meaning 'to have harm,' emphasizing the presence of negative consequences.

有害 is commonly used in scientific, medical, and environmental contexts. For example, it describes toxic chemicals, harmful habits, or dangerous situations. In daily life, people might use it when warning others about unhealthy foods or unsafe behaviors.