Words / B1

HAZ-uh-d-uh-s/ˈhæzədəs/

Hazardous means dangerous, especially for chemicals, waste, or work conditions: hazardous waste; hazardous to health. Hazard is the noun (already in the dictionary). Dangerous is everyday; toxic is more chemical. HSE rules: hazardous waste not in ordinary bins.

Meaning

Dangerous, especially because of chemicals, waste, or conditions at work.

Examples

• “Hazardous waste from the lab cannot go in the ordinary bins.”
• “Icy platforms are hazardous for wheelchair users after dusk.”

Good to know

hazardous waste / substances / to health. Noun: a hazard. Everyday: dangerous. Chemical twin: toxic. Lab / HSE / COSHH.

Near in meaning

dangerous

New