The term 'At a THRESHOLD' can be summarized as being in a state of transition or limbo. The word 'Liminal' is often used to describe this state, which comes from the Latin word 'limen' meaning 'THRESHOLD'. This term is often used to describe a period of time when someone is between two different states, such as between childhood and adulthood, or between one job and another. It can also refer to a situation where a person is on the brink of making a major decision or change in their life.