1. (a.) Capable of taking fire and burning; apt to catch fire; inflammable.

2. (a.) Easily kindled or excited; quick; fiery; irascible.

3. (n.) A substance that may be set on fire, or which is liable to take fire and burn.

accendible alcohol benzine briquette burnable butane carbon charcoal coal coke dope ethane ethanol explosive fiery fireball firing flammable flammable material fuel fuel additive fuel dope gas gas carbon gasoline hasty heptane hexane hot hot-tempered hotheaded inflammable inflammable material isooctane jet fuel kerosene methane methanol natural gas octane oil paraffin passionate peat pentane peppery propane propellant quick quick-tempered rocket fuel short-tempered spunky turf volcanic