noun
complicity
kum-PLIS-uh-tee/kəmˈplɪsəti/
Involvement with others in wrongdoing.
Their secret sharing of stolen coins reveals their complicity in the theft.

Etymology
The image of being folded together underlies a word for a partner or confederate. Complicity names such partnership specifically in wrongdoing: being involved with others in an objectionable act.
In context
For, though I have never been openly accused of complicity in those miserable affairs, yet I cannot rid myself of the remembrance that it was I who introduced the man who perpetrated them to London society
More examples
- She denies any complicity in hiding the missing funds.
- Their silence raises questions about possible complicity.
- The evidence proves complicity rather than mere awareness of the scheme.
Forms
complicity
Similar words
- collusion
- More specifically suggests secret cooperation in wrongdoing.
- involvement
- Involvement is neutral participation; complicity specifically concerns shared wrongdoing.