“Lex non scripta” is a Latin phrase that means “unwritten law” or “law not written.” It signifies the laws and legal principles that are not officially written down in formal statutes, but instead, they are based on custom, tradition, or common law. These unwritten laws can be originated from judicial decisions, legal precedents, or customary practices within a particular society or legal system. On the other hand, “lex scripta” refers to written or codified laws that are formally enacted by a legislative body.