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tr.v. a·bet·ted, a·bet·ting, a·bets
1. To approve, encourage, and support (an action or a plan of action); urge and help on.
2. To urge, encourage, or help (a person): abetted the thief in robbing the bank.

[Middle English abetten, from Old French abeter, to entice : a-, to (from Latin ad-; see ad-) + beter, to bait; see bheid- in Indo-European roots.]

a·bet′ment n.
a·bet′tor, a·bet′ter n.
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noun help, backing, support, aid, assistance, encouragement, abetment, abettal They see blasphemy - and the abetting of it - as a most serious crime.
References in classic literature ?
Why, yes, my dear; that would be aiding and abetting, you know.
I pray you by Jove and Themis, who is the beginning and the end of councils, [do not] hold back, my friends, and leave me singlehanded {18}--unless it be that my brave father Ulysses did some wrong to the Achaeans which you would now avenge on me, by aiding and abetting these suitors.
I guess we are aiding and abetting a felony, Watson.
As I had anticipated, when I came to a conclusion, and consequently allowed her an opportunity of saying a few words, she affected to be extremely shocked and surprised at hearing of the nature of her master's pursuits, and reproached me in terms of the most vehement and virtuous indignation for incurring the guilt of abetting them, even though I had done so from the very excusable motive of saving my own life.
Washington, and new methods of aiding and abetting good King George.
But, if I run away with her afterward, and if you are there, aiding and abetting me, we are guilty of Abduction, and we may stand, side by side, at the bar of the Old Bailey to answer for it
If I have borne hard upon your feelings, in taking away your wife with an honest intention of giving her back to you, when the plans of that devil incarnate were answered, so have you broken into my encampment, aiding and abetting, as they have called many an honester bargain, in destroying my property.
Once investing the dwarf with a design of his own in abetting them, which the attainment of their purpose would serve, it was easy to believe him sincere and hearty in the cause; and as there could be no doubt of his proving a powerful and useful auxiliary, Trent determined to accept his invitation and go to his house that night, and if what he said and did confirmed him in the impression he had formed, to let him share the labour of their plan, but not the profit.
This operation is linked to an allegation of aiding and abetting and is linked to other allegations relating to other alleged terrorism-related activities," she said.
Archbishop Thaddee Ntihinyurwa, who headed the Diocese of Cyangugu in 1994, is accused of abetting the murder of Tutsis by ordering at least 600 people out of the cathedral and into a local stadium, where they were killed.
The 16-year-old, who cannot be named for legal reasons, denied two charges of aiding and abetting a male person in rape when he appeared before a special sitting of Craigavon Magistrates Court.
Tony Lusardi with a charge of aiding and abetting INTERESTING that David Harding accepts Hills play ball with bookmakers who use exchanges and that Hills make use of exchanges, albeit indirectly and through a `bouncer'.