(a.) Tending to agitate.

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