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hazardous

B2
adjective

Pronunciation

UK

  • /hˈæzədəs/

US

  • /ˈhæzərdəs/

Description

Something hazardous can hurt people, damage things, or create unsafe conditions. Picture a road covered in ice, a room full of toxic fumes, or a work area with exposed wires. In each case, the danger may be obvious, or it may build up over time. You will often see the word in phrases like "hazardous waste," "hazardous materials," or "hazardous conditions." When this word appears, it usually means extra care is needed because the risk is real.

Examples

  1. 1

    Winter roads

    The roads can be hazardous in winter.

  2. 2

    Chemical safety

    Firefighters wore special suits while handling hazardous chemicals.

  3. 3

    Risky actions

    It is hazardous to drive when you haven't slept all night.

    • Pattern

      hazardous to + verb

      dangerous to do

  4. 4

    Health risk

    Smoking is especially hazardous to pregnant women and their babies.

    • Pattern

      hazardous to + person/thing

      likely to harm them

  5. 5

    Environmental law

    The company was fined for dumping hazardous waste near the river.

Forms and spellings

1 form open this card.

Main spelling

  • hazardousadjective