Definition of "sibilancy" []

• The state or property of being sibilant (noun)

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• "The sibilant and sonisibilant letters may be elongated in pronunciation like the vowels; the sibilancy is probably occasioned by the vibrations of the air being slower than those of the lowest musical notes."
• "His accent, as usual, increased in sibilancy when he was upset."
• "Certainly Milton would not have avoided them for their sibilancy, he who wrote"