A more thorough explanation:

Definition:

1. The act of returning or going back.
2. The right or liberty of going back.
3. The right to repayment or compensation.

Example: After realizing he forgot his phone, John had to regress back to his house to retrieve it.

Example: The company had the regress to demand compensation for the faulty product they received.

These examples illustrate the definition of regress as they both show the act of going back or returning. The first example shows the physical act of returning to a previous location, while the second example shows the legal act of demanding compensation for a previous transaction.