verb (used with object), as·sib·i·lat·ed, as·sib·i·lat·ing.
to change into or pronounce with the accompaniment of a sibilant sound or sounds.
verb (used without object), as·sib·i·lat·ed, as·sib·i·lat·ing.
Origin of assibilate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(intr) (of a speech sound) to be changed into a sibilant
(tr) to pronounce (a speech sound) with or as a sibilant
Word Origin for assibilate
C19: from Late Latin assībilāre to hiss at, from sībilāre to hiss; see sibilant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012