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One who commands, advises, instigates, or encourages another to commit a crime. A person who, being present, incites another to commit a crime, and thus becomes a principal. To be an abettor, the accused must have instigated or advised the commission of a crime or been present for the purpose of assisting in its commission; he or she must share criminal intent with which the crime was committed.

A person who lends a friend a car for use in a Robbery is an abettor even though he or she is not present when the robbery takes place. An abettor is not the chief actor, the principal, in the commission of a crime but must share the principal's criminal intent in order to be prosecuted for the same crime.


noun accessory, accomplice, accomplice in crime, actuator, adjutant, advocate, aide, aider, assistant, associate, auxiliary, backer, coadjutor, collaborator, conspirator, cooperator, encourager, exponent, helper, henchman, impeller, inducer, instigator, mainstay, maintainer, motivator, particeps criminis, patron, promoter, prompter, protagonist, second, support, supporter, sustainer, upholder
Associated concepts: aiding and abetting, conspiracy
See also: accessory, accomplice, advocate, assistant, backer, benefactor, catalyst, coactor, coadjutant, coconspirator, cohort, colleague, confederate, consociate, conspirator, conspirer, contributor, copartner, participant, partner, proponent

ABETTOR, crim. law. One who encourages or incites, persuades or sets another on to commit a crime. Such a person is either a principal or, an accessory to the crime. When present, aiding, where a felony is committed, he is guilty as principal in the second degree ; when absent, he is merely an accessory. 1. Russell, 21; 1 Leach 66; Foster 428.

References in periodicals archive ?
circuits on this test for criminal liability of an aider and abettor to
In National Westminster, the court found that the circumstances of the primary fraud were alleged in sufficient detail, but were not sufficiently detailed to support the further inference of aider and abettor liability on the part of the defendant law firm.
The statute requires placing the mens rea of the principal upon the aider and abettor.
10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder (collectively Rule 10b-5), generally they are changed with liability as aiders and abettors of another's Rule 10b-5 violation, often as a result of audits or opinions provided to a client.
The plaintiffs further claimed the firm was both a primary violator of section 10(b) and a secondary violator as a conspirator and alder and abettor to CPC.
The accused Saeed Zada acted as abettor and facilitator in embezzlement of Government funds causing huge financial loss to the national kitty.
Merely being present at the spot does not make anyone an abettor.
District Court for the District of Massachusetts dismissed aider and abettor liability claims against Price Waterhouse but sustained other securities law actions against the firm.
District Court, Central District of California, granted Ernst & Young's summary judgment motion based on aider and abettor liability but the court denied the firm's summary judgment motion as a primary violator under section 10b of the Securities Exchange Act of 1934.