adjective
1.
capable of catching or being set on fire
combustible materials should be stored away from open fire
Synonyms: burnable, flammable, ignitable, inflammable
Related Word: comburent, combustive; burning, firing, igniting, kindling
Contrasted words: fireproof; flameproof, nonflammable; fire-resistant, fire-resistive, fire-retardant
Antonyms: incombustible, noncombustible
2.
Synonyms: excitable , agitable, alarmable, edgy, skittery, skittish, startlish, volatile