Definitions
1.nounThe act or situation of relapsing."a drug relapse"
2.nounAn occasion when a person becomes ill again after a period of improvement
3.nounOne who has relapsed, or fallen back into error; a backslider.
4.verbTo fall back again; to slide or turn back into a former state or practice."He has improved recently but keeps relapsing into states of utter confusion."
5.verb(of a disease) To recur; to worsen, be aggravated (after a period of improvement).
6.verbTo slip or slide back physically; to turn back.