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cachinnate

[kak-uh-neyt] /ˈkæk əˌneɪt/
verb (used without object), cachinnated, cachinnating.
1.
to laugh loudly or immoderately.
Origin
1815-1825
1815-25; < Latin cachinnātus (past participle of cachinnāre to laugh aloud, laugh immoderately), equivalent to cachinn- laugh aloud + -ātus -ate1
Related forms
cachinnation, noun
cachinnator, noun
cachinnatory
[kak-uh-nuh-tawr-ee, -tohr-ee, kuh-kin-uh-] /ˈkæk ə nəˌtɔr i, -ˌtoʊr i, kəˈkɪn ə-/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cachinnate

cachinnate

/ˈkækɪˌneɪt/
verb
1.
(intransitive) to laugh loudly
Derived Forms
cachinnatory, adjective
Word Origin
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
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Word Origin and History for cachinnate
v.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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