sibilous

adj

sibilous

adj

Etymology Latin sibilus.

1

Having a hissing sound; sibilant.

a sibilous rattle
In the height of summer it [the grasshopper warbler] chirps the whole night: its sibilous note is observed to cease about the latter end of Jul1812, Thomas Pennant, Arctic Zoology:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.