"alcoholic drink taken before a meal to stimulate the appetite," 1890, from French apéritif "laxative, laxative liqueur," literally "opening," from Latin aperitivus, from aperire "to open, uncover," from PIE compound *ap-wer-yo- from *ap- "off, away" (see apo-) + root *wer- (4) "to cover." A doublet of apertive.
