Sibilation

Common synonyms include: hissing, aphonia, artificial voice, assibilation, broken speech, broken tones.

noun

noun ·Uncommon ·College level

Definitions

Noun

1
A hissing sound. countable, uncountable
"From the shadows emanated a hushed sibilation."
2
pronunciation with a sibilant (hissing or whistling) sound wordnet
3
a fricative sound (especially as an expression of disapproval) wordnet

"From the shadows emanated a hushed sibilation."

Latin sibilatio, from sībilāre (“to hiss”).