relapse.

The action, fact, or process of returning to an earlier state or condition; reversion to or towards a former state. Also: an instance of this…

= retrogradation, n. Cf. retrogation, n.

The action, fact, or process of returning to a former state or condition; reversion to or towards an earlier type or form, esp. one that is less…

The action, fact, or condition of falling back in development; retrogression, decline. Cf. regression, n. 3a.

The action of returning to wrongdoing; relapse.

In extended and figurative uses. A falling back; decline. Obsolete.

= retrogradation, n. (in various senses).

figurative. A check to progress, a retardation or retrograde movement, a relapse, reverse.

= retrogression, n. (in various senses). Sometimes opposed to progress, n.

The action or fact of returning to an inferior or less developed state; deterioration, decline; regression; an instance of this.

the action of going backward; backwarding and forwarding, ‘to-ing and fro-ing’.

An act or the action of falling back (in various senses of the verb); esp. a decline, a drop, a reduction (typically to or towards a former lower…

A reversal or check in progress; a setback, a relapse. Now rare.

Regressiveness; the state of being regressive.