ultrahazardous
/ʌl.trəˈhæz.ər.dəs/
ADJECTIVE
1. Extremely dangerous or involving severe risk
Presenting an exceptionally high degree of danger or risk, with the potential to cause serious injury, illness, damage, or death.
1.1. Hazardous substances and chemicals
Used to describe chemicals, toxic substances, hazardous materials, or spills that pose an exceptionally serious threat to human health, safety, or the environment.
Synonyms
Antonyms
- harmless
- innocuous
- nonhazardous
- safe
Examples
- The sign warned of the presence of an ultrahazardous substance in the restricted area.
- The disposal of the chemical waste was considered an ultrahazardous task requiring specialized equipment.
- The environmental cleanup crew wore protective gear when dealing with an ultrahazardous spill.
Related Words
- toxic substances
- chemical waste
- poison
- contamination
- chemical spill
- protective equipment
- hazardous materials
1.2. Dangerous work and activities
Used to describe jobs, operations, procedures, or activities that expose workers or participants to exceptionally serious physical risks and require specialized training and safety precautions.
Synonyms
- extremely dangerous
- highly hazardous
- perilous
- risky
- unsafe
- life-threatening
- deadly
Antonyms
- safe
- harmless
- nonhazardous
- low-risk
Examples
- The workers were trained to handle materials deemed ultrahazardous with utmost care.
- The disposal operation was classified as ultrahazardous because of the risk of exposure to toxic chemicals.
Related Words
- occupational safety
- workplace hazards
- risk assessment
- protective equipment
- safety procedures
- industrial accidents
- emergency response
1.3. Transportation and handling of dangerous materials
Used to describe the transportation, storage, or handling of substances and materials that present an exceptionally high risk to people, property, or public safety.
Synonyms
- extremely dangerous
- highly hazardous
- perilous
- risky
- unsafe
- life-threatening
Antonyms
Examples
- The regulatory agency imposed strict guidelines for the transportation of ultrahazardous materials to ensure public safety.
- Specialized containers were required to transport the ultrahazardous chemicals safely.
Related Words
- hazardous cargo
- dangerous goods
- chemical transportation
- storage regulations
- public safety
- risk management
- safety regulations