hazardous

haz·ard·ous

adj \ˈha-zər-dəs\

Definition of HAZARDOUS

1

: depending on hazard or chance

2

: involving or exposing one to risk (as of loss or harm) <a hazardous occupation> <disposing of hazardous waste>

— haz·ard·ous·ly adverb

— haz·ard·ous·ness noun

Examples of HAZARDOUS

1. It was a hazardous voyage.
2. These are hazardous chemicals that can cause death if inhaled.

First Known Use of HAZARDOUS

1585

Related to HAZARDOUS

Synonyms: grave, grievous, dangerous, jeopardizing, menacing, parlous, perilous, risky, serious, threatening, unhealthy, unsafe, venturesome

Antonyms: harmless, innocent, innocuous, nonhazardous, nonthreatening, safe, unthreatening

Related Words: dicey, insecure, precarious, treacherous, uncertain; ultrahazardous; chance, haphazard, random; distressing, sickening, unpleasant; ugly, wicked; adverse, bad, baleful, baneful, deleterious, detrimental, evil, harmful, hurtful, ill, inimical, injurious, malignant, nasty, noxious, pernicious, pestilent; deadly, deathly, destructive, dire, fatal, fateful, fell, killer, lethal, mortal, murderous

Near Antonyms: advantageous, beneficial, good; ultrasafe

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See Synonym Discussion at dangerous