Mellifluous – flowing sweetly and smoothly; honeyed; said of words, sounds, etc.
“[The two excepts of Hiawatha in this volume] show the poem to be mellifluous, prettily and sometimes even beautifully imagistic, but shallow; a pleasant literary-anthropological tour de force but nothing more.”
Lawrence Buell, in the introduction to Henry Wadsworth Longfellow: Selected Poems