Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun instigant
1 sense of instigant
Sense 1
instigator, provoker, inciter, instigant, firebrand -- (someone who deliberately foments trouble; "she was the instigator of their quarrel")
=> troublemaker, trouble maker, troubler, mischief-maker, bad hat -- (someone who deliberately stirs up trouble)