Definition of hazardous in English:

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hazardous

Pronunciation: /ˈhazədəs/

adjective

Risky; dangerous: we work in hazardous conditions it is hazardous to personal safety
More example sentences
  • He added that it would be wrong to assume that mobile phones were hazardous to human health.
  • He has been asked whether emissions from the refinery are hazardous to human health.
  • At least one candidate in the election reports that campaigning has proven hazardous to his health.
Synonyms
dangerous, risky, unsafe, perilous, precarious, insecure, tricky, unpredictable, uncertain, high-risk, touch-and-go, fraught with danger
informal dicey, hairy, sticky, iffy
British informal dodgy
North American informal gnarly
archaic or humorous parlous
chancy, uncertain, undependable, unpredictable, precarious, speculative

Derivatives

hazardously

Pronunciation: /ˈhazədəsli/
adverb
Example sentences
  • When the weight that physicians know to be hazardously overweight is considered normal weight by the general public, major health problems are on the horizon.
  • He envisaged himself wobbling on the edge of an invisible cliff, leaning hazardously this way and that.
  • Five drivers were caught driving hazardously under the influence of liquor.

hazardousness

Pronunciation: /ˈhazədəsnəs/
noun
Example sentences
  • These chemicals were sorted in a descending order of their hazardousness probability.
  • He sprayed ignition-retardant on the ground to reduce the hazardousness of the spilled gasoline.

Origin

Mid 16th century: from French hasardeux, from hasard 'chance' (see hazard).

For editors and proofreaders

Line breaks: haz¦ard|ous

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