/bækˈslaɪdz/
NOUN
A reversal of progress or improvement, resulting in a return to an earlier or less desirable condition.
Instances of declining, regressing, or returning to a previous and less favorable condition after making progress.
Dance movements in which the feet are alternately slid backward while the heels are lifted, creating the illusion of walking forward while actually moving backward.
VERB
To slip backward in progress, improvement, or development, or to revert to a previous and less desirable condition.
To decline, worsen, or return to an earlier and less favorable condition after a period of improvement.