complicity (n.) Look up complicity at Dictionary.com
1650s, from French complicité, from Old French complice "accomplice, comrade, companion" (14c.), from Late Latin complicem, accusative of complex "partner, confederate," from Latin complicare "to fold together," from com "with, together" (see com-) + plicare "to fold, weave" (from PIE root *plek- "to plait"). Compare accomplice.