Main Entry:

¹re·lapse

Pronunciation:

\ri-ˈlaps, ˈrē-ˌ\

Function:

noun

Etymology:

Middle English, from Medieval Latin relapsus, from Latin relabi to slide back, from re- + labi to slide — more at sleep

Date:

15th century

1 : the act or an instance of backsliding, worsening, or subsiding 2 : a recurrence of symptoms of a disease after a period of improvement