The person advertising or instigating the performing of a criminal work. See instigation.
a person who assists or promotes or incites another
- a person who abets; an instigator of an offense or an offender.
(n.) A person who abets; an instigator of an offense or an offender.
Peter of Castelnau retaliated by excommunicating Raymond VI., count of Toulouse, as an abettor of heresy (1207), and kindled in the nobles of the south that animosity of which he was the first victim (1209).