A more thorough explanation:

Definition: To unite or marry.

Example: In the 18th century, it was common for parents to accouple their children at a young age.

Explanation: The example shows how the term "accouple" was used in the past to refer to the act of parents arranging marriages for their children. It was a way to unite families and ensure social status. Today, the term is considered archaic and is not commonly used.