The phrase "appurtenant to" is often used to describe something that is related or connected to another thing. However, it can be helpful to have alternative words or phrases to avoid repetition. Synonyms for "appurtenant to" can include terms like "associated with," "related to," "pertaining to," "connected to," "belonging to," and "adjacent to." By using these alternatives, you can vary your language and express ideas in different ways while maintaining clarity and precision. This can be helpful in a range of contexts, from academic writing to legal documents, and can also improve your overall communication skills by expanding your vocabulary.