[ kak-uh-neyt ]
/ ˈkæk əˌneɪt /

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
Related formscach·in·na·tion, nouncach·in·na·tor, nouncach·in·na·to·ry [kak-uh-nuh-tawr-ee, -tohr-ee, kuh-kin-uh-] /ˈkæk ə nəˌtɔr i, -ˌtoʊr i, kəˈkɪn ə-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cachinnate

British Dictionary definitions for cachinnate


/ (ˈkækɪˌneɪt) /


(intr) to laugh loudly
Derived Formscachinnatory, adjective

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

Word Origin and History for cachinnate



"to laugh loudly or immoderately," 1824, from Latin cachinnatum, past participle of cachinnare (see cachinnation). Related: Cachinnated; cachinnating.

Online Etymology Dictionary, © 2010 Douglas Harper