complicit
kum-PLIS-itadjMeaning taking part with others in doing something wrong
Memory hook an acCOMPLICE is COMPLICIT. Kai does not take the cookies himself, but he holds the ladder while Pip climbs to the jar; as Pip’s accomplice, Kai is complicit.
By hiding his friend’s copy of the stolen answers, Jonah became complicit in the cheating.
In context The guard did not take the painting himself, but he was complicit: he left the back door unlocked and looked the other way.
Similar involved, implicated, in league, guilty
Opposite innocent, blameless, uninvolved
From complicity, which goes back to Latin complicare, “to fold together.”