Entry 1 sense Webster, 1913 Mellifluous · Mel·lif·lu·ous · IPA /məˈlɪflu.əs/ 01 a. Flowing as with honey; smooth; flowing sweetly or smoothly; as, a mellifluous voice. 1. Flowing as with honey; smooth; flowing sweetly or smoothly; as, a mellifluous voice.