GRE flammable Definition Able to be easily ignited and burn quickly. Example "Keep flammable materials away from heat sources." Sign in to save GRE Quiz → ← flame flap → Study tips featuring "flammable" Write GRE Words Into Your Own Sentences Related words GRE swill GRE taper GRE testy GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct