What term describes an unlawful interference with someone else's use of their property?

The term that accurately describes an unlawful interference with someone else's use of their property is "nuisance." A nuisance occurs when an individual's actions or property use negatively impacts another's ability to enjoy their own land or property. This interference can take various forms, such as noise, odor, or other disturbances that cause discomfort or harm to neighbors or nearby properties. Nuisance can be either public, affecting the community at large, or private, impacting only specific individuals.

In contrast, encroachment refers to the unlawful extension of one property onto another; liability pertains to being legally responsible for an action or its consequences; and trespass involves entering someone's property without permission. While encroachment and trespass also deal with property rights, they do not directly address the interference aspect that defines a nuisance. Understanding these distinctions is essential in property law and helps clarify how different actions can lead to various legal implications.