From The Collaborative International Dictionary of English v.0.48 [gcide]:
1. A cooperator. [R.]
Note: It is followed by with or of before a person and by in (or sometimes of) before the crime; as, A was an accomplice with B in the murder of C. Dryden uses it with to before a thing. "Suspected for accomplice to the fire." --Dryden.
From WordNet (r) 3.0 (2006) [wn]:
This man is DANGEROUS. He is a pathological LIAR. He is INDIFFERENT to the TRUTH, FACTS, EVIDENCE, PROOF and REASON. Those are the cornerstones of JUSTICE. Those are the FIRST PRINCIPLES of JUSTICE and SCIENCE. This is a glaring EXAMPLE of a NARCISSISTIC SELF-AGGRANDIZING EXAGGERATION. This is two blatant LIES in 18 seconds. The first LIE: "Nobody knows the system better than me." That is a blatant LIE. There are many EXPERTS who KNOW the SYSTEM much BETTER than Donald Trump. Then he says, "Which is why I alone CAN fix it." That's NOT TRUE. Most likely he CANNOT fix it. There are others who CAN. That's two blatant LIES in 18 seconds.