1) Arsonist 2) Barnburner 3) Combustible 4) Firebomb 5) Firebug 6) Incitive 7) Instigative 8) Provocative 9) Seditious 1) Burning 2) Combustion 3) Firebomb 4) French word used in English 
Incendiary means `capable of causing fire`. It may also refer to: ...
• (n.) A person who excites or inflames factions, and promotes quarrels or sedition; an agitator; an exciter. • (a.) Of or pertaining to incendiarism, or the malicious burning of valuable property; as, incendiary material; as incendiary crime. • (n.) Any person who maliciously sets fire to a building or other valuable or other valuab...
In·cen'di·a·ry noun ; plural Incendiaries . [ Latin incendiarius : confer French incendiaire . See Incense to inflame.] 1. Any person who maliciously sets fire to a building or other valuable or other valuable property. 2. A person who excites or...
[adj] - involving deliberate burning of property 2. [adj] - arousing to action or rebellion 3. [adj] - capable of catching fire spontaneously or causing fires or burning readily
incitive adjective arousing to action or rebellion
arousing to action or rebellion[SAT terms] a criminal who illegally sets fire to property arousing to action or rebellion arousing to action or rebellion[ACT vocabulary] arousing to action or rebellion