Origin of mellifluent
1595–1605; < Late Latin mellifluent- (stem of mellifluēns), equivalent to Latin melli- (stem of mel) honey + fluent- fluent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Word Origin and History for mellifluent
c.1600, from Middle French mellifluent and directly from Late Latin mellifluentem (nominative mellifluens), related to mellifluus (see mellifluous).
Online Etymology Dictionary, © 2010 Douglas Harper