The word "untapped" means not yet used or explored. It refers to something that has potential but hasn't been utilized, discovered or exploited yet. This term is often used in reference to natural resources such as oil reserves, mineral deposits, water sources and other untouched areas of land waiting to be developed for agriculture, housing or industry. In a broader sense, it can also refer to human potential, ideas, talents or abilities that have not yet been realized or brought forth by an individual or society.