verb (used without object), cach·in·nat·ed, cach·in·nat·ing.
to laugh loudly or immoderately.
Origin of cachinnate
1815–25; < Latin cachinnātus (past participle of cachinnāre to laugh aloud, laugh immoderately), equivalent to cachinn- laugh aloud + -ātus -ate1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cachinnate
Historical Examples of cachinnate
That definition excludes women, because they giggle, or chuckle, or cachinnate.
(intr) to laugh loudly
Word Origin for cachinnate
C19: from Latin cacchināre, probably of imitative origin
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
"to laugh loudly or immoderately," 1824, from Latin cachinnatum, past participle of cachinnare (see cachinnation). Related: Cachinnated; cachinnating.
Online Etymology Dictionary, © 2010 Douglas Harper