Synonyms of flammable

flammable

adjective

ˈfla-mə-bəl 

as in combustible

capable of catching or being set on fire

avoid wearing loose flammable clothing when using the blowtorch

Synonyms & Similar Words

• combustible
• explosive
• inflammable
• ignitable
• combustive
• fiery
• burnable
• touchy
• incendiary

Antonyms & Near Antonyms

• fireproof
• nonflammable
• noncombustible
• incombustible
• noninflammable
• unburnable
• nonexplosive
• nonburnable

Example Sentences

Recent Examples of flammable

But while the buildings appeared to be marble, they were actually made of extremely flammable plaster, pine, hemp and jute — all haphazardly draped with live electrical wires. — Alison J. Stein, HubSpot, 1 Sep. 2026

Extraction companies often use flammable gases such as butane or propane to remove THC from the cannabis plant, according to Tulsa World. — Kc Baker, PEOPLE, 31 Aug. 2026

Isopropyl alcohol is flammable; store the container in a cool place away from any direct heat source. — Mary Marlowe Leverette, The Spruce, 29 Aug. 2026

Headlines from the early 2020s were filled with Teslas burning in garages and Chevy Bolts taken off the road due to flammable batteries. — Todd C. Frankel, Washington Post, 28 Aug. 2026