👉 Unrevocableness is a term used in linguistics to describe a word or phrase that has been in use for an extended period of time without any specific definition or meaning being assigned to it. This can happen due to various factors such as cultural, social, and historical contexts. For example, the English word "book" has been in use since ancient times, and its meaning has evolved over time based on changes in language usage and culture. However, some words like "book" have remained