hazardous

/ˈhæzədəs/ (bre, ipa) · /ˈhæzərdəs/ (ame, ipa) · /ˈha-zər-dəs/ (ame, mw)

hazardous — adjective

  • hazardouspositive
  • more hazardouscomparative
  • most hazardoussuperlative

1. describing a substance, activity, or situation that could harm people's health,

1.形容詞B2
釋義

describing a substance, activity, or situation that could harm people's health, damage property, or cause serious injury.

例句

The abandoned factory was classified as hazardous after the inspection team arrived.

passive: was classified as hazardous

Sade wore protective gear while handling hazardous waste at the chemical plant.

collocation: hazardous waste

同義詞
  • dangerous

    broader and more common in everyday speech; 'dangerous' can apply to anything that might cause harm, while 'hazardous' often implies a specific, recognized risk

  • risky

    focuses on the chance of failure or loss rather than physical danger; a risky investment may not be hazardous to your health

  • unsafe

    stresses lack of security or protection; a building can be unsafe because of poor construction without necessarily involving hazardous materials

反義詞
  • safe

    free from danger or risk; the opposite of hazardous in nearly all contexts

  • harmless

    unable to cause injury or damage; a harmless substance is one that poses no health risk

文法句型

hazardous + noun (hazardous waste / hazardous materials / hazardous conditions)

be + hazardous

hazardous to + noun phrase

用法筆記

Common in safety regulations, environmental protection, and industrial contexts rather than everyday casual speech. Often appears in compound nouns such as hazardous waste, hazardous materials (abbreviated hazmat), and hazardous conditions.

常見錯誤

❌The dog is hazardous.
✅The dog is dangerous.
💡'hazardous' is used for substances, conditions, or activities, not for animals or people.
❌This knife is hazardous to cut vegetables.
✅This knife is dangerous for cutting vegetables.
💡'hazardous' typically describes materials or conditions, not tools used for their normal purpose.