Wiktionary
co-conspirator
n. A person who has been involved with others in a conspiracy.
Usage examples of "co-conspirator".
If numbers three and four were true, it was likely Poyndex had co-conspirators within Arundel itself.
The media, which had been Navarro's pliant co-conspirators for so long, are now lambasted for their "feeding frenzy.
Heading south from Washington after the assassination, he reached the rolling Rappahannock River in Virginia on the twelfth night of his flight, and took refuge, along with one of his co-conspirators, in a tobacco barn belonging to the farm of one Richard Garrett.