1. (a.) Inflammatory; capable of causing fire, sedition, or quarrel\; seditious.

2. (n.) Any person who maliciously sets fire to a building or other valuable or other valuable property.

3. (n.) A person who excites or inflames factions, and promotes quarrels or sedition; an agitator; an exciter.

4. (a.) of or pertaining to incendiarism, or the malicious burning of valuable property; as, incendiary material; as incendiary crime.

Mafioso Young Turk agent provocateur agitational agitative agitator agitprop arsonist beast beldam berserk berserker bomber brute catalyst demagogue demon devil dragon enkindling exciter fiend fire worshiper fire-eater firebrand firebug fomenter fomenting fury goon gorilla gunsel hardnose hell-raiser hellcat hellhound hellion holy terror hood hoodlum hothead hotspur incentive inciter inciting incitive inflamer inflaming inflammative inflammatory instigating instigative instigator killer kindling lighting mad dog madcap mischief-maker monster mugger provocateur provoker pyrolater pyromaniac pyrophile rabble-rouser rabble-rousing rapist revolutionary ringleader rouser savage seditionary seditionist she-wolf spitfire termagant terror terrorist tiger tigress torch tough tough guy troublemaker ugly customer urger violent virago vixen wild beast witch wolf