sibilate
verb
- utter a sibilant or hissing sound.
Wiktionary
verb
Etymology: Borrowed from Latin sībilātus, past participle of sībilō. Doublet of siffle.
- To hiss.
- To speak with a hissing sound.
Etymology: Borrowed from Latin sībilātus, past participle of sībilō. Doublet of siffle.