Flammable
Flammable adjective - Capable of catching or being set on fire.
Hazardous
Hazardous adjective - Involving potential loss or injury.
Flammable and hazardous are semantically related in combustible topic. You can use "Flammable" instead an adjective "Hazardous".
Mutual synonyms
Both words in one sentence
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The United States Chemical Safety and Hazard Investigation Board has published a number of videos describing, in detail, the various ways that industrial processes involving hazardous or flammable substances can go very, very wrong.
Source: No OSHA Compliance -
If there's a chance to put something sharp/heavy/flammable/otherwise hazardous on a shaky or unstable surface, you can bet your ass they will.
Source: Film / Final Destination
Cite this Source
Hazardous and Flammable. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/flammable/hazardous
Flammable & Hazardous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/flammable/hazardous>.
Hazardous or Flammable. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/flammable/hazardous.
Google Ngram Viewer shows how "flammable" and "hazardous" have occurred on timeline