carouseyoudaoicibaDictYouDict
carouse: [16] Etymologically, carouse means to drink something up ‘completely’. Originally it was an adverb, used in phrases such as drink carouse (‘the tiplinge sottes at midnight which to quaffe carouse do use’, Thomas Drant, Horace’s Epigrams 1567). These were a partial translation of German trinken garaus, in which garaus is a compound adverb made up of gar ‘completely, all’ and aus ‘out’.
carouse (v.)youdaoicibaDictYouDict
1550s, from Middle French carousser "drink, quaff, swill," from German gar aus "quite out," from gar austrinken; trink garaus "to drink up entirely." Frequently also as an adverb in early English usage (to drink carouse).