flammable.
Capable of burning.
Meaning & usage
Capable of burning.
flammable liquid
Easily set on fire.
Easily set on fire. Subject to easy ignition and rapid flaming combustion.
Very likely to cause fighting or controversy; extremely contentious.
Where this word comes from
Back-formation from inflammable, which is used to avoid confusion with non-flammable, as the prefix in- is often used to mean "un-; non-", although it was originally meant in a sense closely related to en-.
Any flammable substance.
Where this word comes from
Back-formation from inflammable, which is used to avoid confusion with non-flammable, as the prefix in- is often used to mean "un-; non-", although it was originally meant in a sense closely related to en-.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.