They had both become aware of a sort of sibilant breathing, and they looked round them in bewilderment.
"We have awaited your coming," she said in her sibilant voice.
Distinctly there came to their ear a sibilant, whispering sound.
When they spoke Universal, their voices were sibilant, but not nearly so inhuman.
The sibilant foreign accent was there, but none of the broad boisterousness their audiences had loved.
The name, also sibilant and thus easier to hear, was 'Esens'.
The hush was stung by a long, low, sibilant sound; a single hiss insulted that sacred stillness.
She spoke French with the soft, sibilant intonation of the Spaniard.
With the chief's sibilant warning the boys softly laid down the tools and motor parts they were handling, and stood at attention.
The guard had paused, and from his lips came a sibilant sound.
1660s, from Latin sibilantem (nominative sibilans), present participle of sibilare "to hiss, whistle," possibly of imitative origin (cf. Greek sizein "to hiss," Lettish sikt "to hiss," Old Church Slavonic svistati "to hiss, whistle"). Related: Sibilance; sibilation (1620s).
"speech sound having a hissing effect," 1772, from sibilant (adj.).
sibilant sib·i·lant (sĭb'ə-lənt)
Of, characterized by, or producing a hissing sound like that of (s) or (sh).