Synonyms for incendiary

modified

1. Combustible

   ignitable, burnable, flammable; see burning 1, inflammable.

2. Stirring up strife or rebellion

   inflammatory, provocative, subversive; see dangerous 1, inflammatory, rebellious 2, treacherous 2.

noun

1. Arsonist

   pyromaniac, firebug*, petroleur (French); see arsonist, criminal.

2. An agitator

   insurgent, instigator, provocateur (French); see agitator, rebel 1.