mellifluous adj.

Proto-Indo-European root meaning "honey."

It forms all or part of: caramel; marmalade; Melissa; mellifluous; mildew; molasses; mousse.

It is the hypothetical source of/evidence for its existence is provided by: Greek meli, Latin mel "honey; sweetness;" Albanian mjal' "honey;" Old Irish mil "honey," Irish milis "sweet;" Old English mildeaw "nectar," milisc "honeyed, sweet;" Old High German milsken "to sweeten;" Gothic miliþ "honey."

1580s, "flowing freely" (of water), also, of speakers, "able and nimble in the use of words," from Latin fluentem (nominative fluens) "lax, relaxed," figuratively "flowing, fluent," present participle of fluere "to flow, stream, run, melt," from extended form of PIE *bhleu- "to swell, well up, overflow" (source also of Latin flumen "river;" Greek phluein "to boil over, bubble up," phlein "to abound"), an extended form of root *bhel- (2) "to blow, swell." Used interchangeably with fluid (adj.) in 17c. in the sense "changeable, not rigid." Related: Fluently.