Which term would apply to engaging in a situation without permission?

Engaging in a situation without permission is accurately described by the term "interfere." This term implies an unwelcome or improper involvement in a scenario, suggesting an intrusion that disrupts the established order or the rights of others. In law enforcement contexts, interference can denote actions that may obstruct legal processes, investigations, or personal rights.

While terminology like "facilitate," "assist," and "contribute" often carry more positive implications of help or support, they do not convey the sense of unwelcome or unauthorized action implied by "interfere." These other terms are typically associated with voluntary and permissible participation in an activity, which is contrary to the nature of acting without permission. Therefore, "interfere" is the most appropriate choice in this context, reflecting the unauthorized engagement in a situation.