sibilation

Definitions of sibilation
1

n a fricative sound (especially as an expression of disapproval)

Synonyms:
fizzle, hiss, hissing, hushing
Type of:
noise
sound of any kind (especially unintelligible or dissonant sound)

n pronunciation with a sibilant (hissing or whistling) sound

Synonyms:
assibilation
Type of:
pronunciation
the manner in which someone utters a word

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.