enforcer
n. B2 Upper Intermediate US //ɛnˈfɔɹsɝ// UK //ɛnfˈɔːsɐ// en·forcer
n. a person who makes sure that rules or laws are followed. They often use force or authority to stop people from breaking the rules.
n. a person or entity that ensures compliance with a set of rules, laws, or agreements, often through the use of authority or force.
The police are the enforcers of the law.
In many international treaties, a third-party organization acts as the enforcer to ensure both countries follow the terms.
The role of the enforcer is not merely to punish transgressions but to establish a consistent standard of behavior that maintains the integrity of the entire system.
From enforce + -er.