The sound, which filled the room, with its hurry of short syllables, its sudden pauses, and its sudden attacks, might be compared to some animal hubbub, frantic and inarticulate.
"Night and Day"
Virginia Woolf
One of the girls spoke politely, in wholly unintelligible syllables.
"Long Ago, Far Away"
William Fitzgerald Jenkins AKA Murray Leinster
Repetition of similar words or syllables.
"Practical Grammar and Composition"
Thomas Wood