Encroachment is the unlawful intrusion of or trespassing upon another person's rights, property or domain. These intrusions can occur over a short or long period of time. An example of encroachment would be a person extending their fence into the property of another without permission. Encroachment basically involves one person's legal boundaries being infringed upon by another person. This term is commonly used in reference to property lines. However, it also refers to infringement of ... Encroachment is the act of slowly affecting or using up too much of somebody's time, rights, personal life, etc. or the act of slowly covering more and more of an area. Learn how to use this word in different contexts with pictures, pronunciation and synonyms. encroachment - Meaning in Law and Legal Documents, Examples and FAQs Encroachment, or invasion, happens when someone builds or uses part of their property that crosses over into someone else's land. Encroachment is the action or process of encroaching on something, such as invading or violating someone's rights or territory. Learn more about the word origin, synonyms, and usage of encroachment with sentences and collocations.