From Longman Dictionary of Contemporary Englishmellifluousmel‧li‧flu‧ous /məˈlɪfluəs/ adjective formal APMa mellifluous voice or piece of music sounds pleasantly smooth
Examples from the Corpus
mellifluous• Dowson's poetry is mannered, literary, mellifluous, and in a diction operating on a narrow register.• The voice was mellifluous and smooth.• a mellifluous voiceOrigin mellifluous (1400-1500) Late Latin mellifluus, from Latin mel “honey” + fluere “to flow” 