a·bet 
(ə-bĕt)
(ə-bĕt)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 the Appendix of Indo-European roots.]
a·betment n.
a·bettor, a·better n.