Characterized by retrogression; retrogressive.

retreating from a given line or boundary as a shoreline moving seaward

opposing progress

A policy or program that has a greater effect on, or works to the disadvantage of, lower income persons.

A tax which taxes low income persons more heavily as a proportion of income, e.g. a sales tax 9vs. Progressive Tax).

Pressure vs Time curve in which the pressure decreases with duration.

(of taxes) adjusted so that the rate decreases as the amount increases

Passing back; returning.