v. a.
1.
Aid, assist, help, support, succor, second, sustain, uphold, back, co-operate with, take part with, give support to, embolden, subsidize.
2.
Favor, encourage, sanction, countenance, advocate, connive at, be or become subsidiary to.
3.
( Law .) Instigate ( to commit a crime ), stimulate, incite, foment.