Definition of cachinnate
: to laugh loudly or immoderately
cachinnationplay \ˌka-kə-ˈnā-shən\ noun
Did You Know?
Cachinnate has been whooping it up in English since the 19th century. The word derives from the Latin verb cachinnare, meaning "to laugh loudly," and "cachinnare" was probably coined in imitation of a loud laugh. As such, "cachinnare" is much like the Old English "ceahhetan," the Old High German kachazzen, and the Greek kachazein - all words of imitative origin that essentially meant "to laugh loudly." Our word cackle has a different ancestor than any of these words (the Middle English "cakelen"), but this word, too, is believed to have been modeled after the sound of laughter.
Origin and Etymology of cachinnate
Latin cachinnatus, past participle of cachinnare, of imitative origin
First Known Use: 1824
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