sibilus

Etymology
An formation, with similar words in various branches of Indo-European. Gamkrelidze and Ivanov derive the word from ; if so, then related to 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬 and 🇨🇬 (compare 🇨🇬 and 🇨🇬).

Noun

 * 1) a hissing, whistling
 * 2) a contemptuous hissing