What is the meaning of Regress?

The act of passing back; passage back; return; retrogression.

The power or liberty of passing back.

The right of a person (such as a lessee) to return to a property.

To move backwards to an earlier stage; to devolve.

To re-develop behavior one had previously grown out of, particularly a behavior left behind in childhood.

To move in the retrograde direction.(clarification of this definition is needed.)

To reduce in severity or size (as of a tumor), without reaching total remission.

To perform a regression on an explanatory variable.

To interrogate a person in a state of trance about forgotten elements of their past.

regress.

Source: wiktionary.org