[syn: instigator, provoker, inciter, instigant, firebrand]
The Collaborative International Dictionary of English v.0.48:
Firebrand \Fire"brand`\, n.
1. A piece of burning wood. --L'Estrange.
[1913 Webster]
2. One who inflames factions, or causes contention and
mischief; an incendiary. --Bacon.
[1913 Webster]
WordNet (r) 3.0 (2006):
firebrand
n 1: a piece of wood that has been burned or is burning [syn:
brand, firebrand]
2: someone who deliberately foments trouble; "she was the
instigator of their quarrel" [syn: instigator, provoker,
inciter, instigant, firebrand]