To shirk responsibility; to renege on one's obligations or commitments.
To revert back into a life of sin after being saved.
To regress; to slip backwards or revert to a previous, worse state.
A backward regression; a reverting back to a worse state.
A dance move in which the feet are alternately slid back and the heels lifted, giving the illusion of walking forwards while actually moving backwards.
To revel in baseness or scandal.
Used other than figuratively or idiomatically: see wallow, mire.