Poppysmic

- the sound produced by the smacking of the lips.

It comes from the Latin poppysma, via the defunct French popisme. Romans used the original for a kind of lip-smacking, clucking noise that signified satisfaction and approval, especially during lovemaking. In French, it referred to the tongue-clicking tsk-tsk sound that riders use to encourage their mounts. The only writer in English known to have used our word was James Joyce, in a stage direction in Ulysses: “FLORRY WHISPERS TO HER. WHISPERING LOVEWORDS MURMUR, LIPLAPPING LOUDLY, POPPYSMIC PLOPSLOP.”