Definition of "abettor" []

• One who helps or encourages or incites another (noun)

WordNet. Princeton University. 2010.

• "And their biggest aider and abettor is Ottawa itself."
• "How much does a hostile nation such as Saudi Arabia need to do before it is deemed an "abettor" rather than an "ally"?"
• "A Libya in part or whole under the Gadhafi clan would be a failed, isolated and dangerous place ruled by a vengeful tyrant and a likely abettor of terrorists."