verb
(transitive, crime) To incite; to assist or encourage by aid or countenance in crime.
(transitive) To support, countenance, maintain, uphold, or aid (any good cause, opinion, or action).
(obsolete, transitive) To urge on, stimulate (a person to do) something desirable.
(obsolete) To back up one's forecast of a doubtful issue, by staking money, etc., to bet.
noun
(obsolete) Fraud or cunning.
(obsolete) An act of abetting; of helping; of giving aid.