Synonyms of combustible

combustible

adjective

kəm-ˈbə-stə-bəl 

as in explosive

capable of catching or being set on fire

don't store oily rags and other combustible materials in a hot attic

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of combustible

And just as lighting a candle requires multiple causal factors – the presence of oxygen, a combustible object, a source of ignition – developing motivations requires multiple social and structural factors for that spark to grow into a flame. — Deborah Mower, The Conversation, 2 July 2026

Large protests are expected and, in a country where migration has become an easy target for people suffering from a cascade of social and economic ills, the gatherings risk becoming combustible. — Tiisetso Motsoeneng, semafor.com, 29 June 2026

Visitors with a valid California Campfire Permit may continue using portable gas or propane stoves, lanterns and similar devices equipped with a shut-off valve if they are operated at least 3 feet from combustible materials. — Evelyn Ronan, Sacbee.com, 26 June 2026

Bell was widely viewed as a less ideologically combustible choice, but his nomination quickly attracted the same DEI backlash that doomed Ono. — Garrett Shanley, Miami Herald, 25 June 2026