accomplice
/ˈækəmˌplis/Definitions
1. noun
A person who is involved with or supports a crime or a wrongdoing, often in a secretive or hidden manner.
“The accomplice to the robbery was caught by the police and confessed to the crime.”
2. noun
A person who assists or cooperates with someone, especially in a joint activity or business.
“The business partners were both accomplices in the success of their startup company.”
3. noun
A person who is an associate or colleague in a particular activity or profession.
“The two artists were accomplices in the art movement, often collaborating on projects together.”