hazardous B2 Topic:Safety & Risk US /ˈhæ.zɚ.dɪs/ See IPA manual Freq #17244 Meanings 1 adj Dangerous or risky; likely to cause harm. The factory must store its hazardous chemicals safely. Thesaurus Synonyms 1 adj · dangerous or risky; likely... dangerousrisky ↔ Opposites non-hazardousnonhazardous Word family Derived forms biohazardousextrahazardousgeohazardoushazardouslyhazardousnesshazmatultrahazardousunhazardous Etymology AI details From Middle French hasardeux, equivalent to hazard + -ous. hasardeux Middle French View etymology graph -> Topics Safety & Risk External links Cambridge Dictionary Wiktionary Google Images # hazardous **Type:** Word **Level:** B2 **Part of speech:** adj **IPA (US):** /ˈhæ.zɚ.dɪs/ **Frequency rank:** 17244 ## Meanings 1. Dangerous or risky; likely to cause harm. ## Examples - The factory must store its hazardous chemicals safely. ## Antonyms - non-hazardous - nonhazardous ## Derived Forms - biohazardous - extrahazardous - geohazardous - hazardously - hazardousness - hazmat - ultrahazardous - unhazardous ## Roots and Affixes - Root: hasardeux ## Etymology From Middle French hasardeux, equivalent to hazard + -ous. ## AI Etymology Hazardous comes from Middle French hasardeux, equivalent to hazard + -ous. The analysis is mainly morphological: the modern adjectival form is built from the named base and affix. In current use, the main sense is “Dangerous or risky; likely to cause harm”. ## Topics - Safety & Risk markdown