complicit
/kəmˈplɪsɪt/
adjective
- Involved with others in wrongdoing or a questionable activity, often by not speaking out or by giving silent approval.
- By ignoring the bullying, the teacher was complicit in the harassment.
- He felt complicit in the lie because he didn't correct his friend's story.
- The company was complicit in the pollution by failing to report the leak.