Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- v. To laugh hard, loudly, or convulsively; guffaw.
Century Dictionary and Cyclopedia
- To indulge in loud, continued laughter; to laugh immoderately.
Wiktionary
- v. To laugh loudly, immoderately, or too often.
WordNet 3.0
- v. laugh loudly and in an unrestrained way
Etymologies
- Latin cachinnāre, cachinnāt-, of imitative origin.
Examples
“I think I shall have a mighty awesome night tonight .... and may even tell u all about it tomorrow ... (hmm perhaps not ALL) * cachinnate* relinquished - curiosity”
“They reach at once and directly the instinctive sense of the ludicrous, and over them youth and age cachinnate together.”
“But, heigho! some fly or other is the indispensable adjunct of every pot of ointment, and while I was still jumping for joy at having passed the steep barrier of such a Rubicon, there came a letter from Miss JESSIMINA which constrained me to cachinnate upon the wrong side of nose!”
“Every time you take a full breath, or when you cachinnate well, the diaphragm descends and gives the stomach an extra squeeze and shakes it.”
Lists
These user-created lists contain the word ‘cachinnate’.
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Of Imitative Origin
Words formed in imitation of the sound of the things they signify.
bawl, biff, blizzard, blob, blooper, bob, boff, bomb, bonkers, boo, borborygmus, brouhaha and 148 more...
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Ayatollah's list
Trinkets of lexical goodness.
floccinaucinihili..., quomodocunquize, curmudgeon, illaqueate, ipsissimosity, heterochthonous, hakenkreuz, forisfamiliate, appropinquate, apodyopsis, baryphony, cachinnate and 146 more...
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Logolepsy
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Anschauung, Areopagus, Argus, Briarean, Dei gratia, Dei judicium, Deo volente, Duecento, Foehn, Geflugelte Worte, Gegenschein, Hakenkreuz and 9230 more...

ag0991 to laugh loudly and raucously; to guffaw (especially in an exceptionally irritating manner) Dec 2, 2008