Hazardous

/ˈhæz.ər.dəs/

Meaning & Definition

adjective

Full of risk; perilous.

Working in a hazardous environment can lead to serious injury if safety precautions are not taken.

Possessing a harmful quality or detrimental potential.

The chemical waste was deemed hazardous and required special disposal methods.

Dangerous to health or safety.

Many hazardous materials are regulated by law to protect workers and the public.

From the word 'hazard', which comes from old French 'hasard', meaning chance or risk.

hazardous waste

waste materials that pose a threat to human health or the environment.

hazardous materials

substances that could pose a risk to health or safety.

peril

serious and immediate danger.

risk

a situation involving exposure to danger.

risky behavior

That stunt was totally hazardous!

dangerous situation

Driving without a seatbelt is pretty hazardous.