cach·​in·​nate ˈka-kə-ˌnāt How to pronounce cachinnate (audio)
cachinnated; cachinnating

intransitive verb

: to laugh loudly or immoderately
cachinnated till his sides must have achedJohn Burroughs
cachinnation 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 words giggle and guffaw are unrelated to those (and to each other) but they too are believed to have been modeled after the sound of laughter.

Word History


Latin cachinnatus, past participle of cachinnare, of imitative origin

First Known Use

1824, in the meaning defined above

Time Traveler
The first known use of cachinnate was in 1824


Dictionary Entries Near cachinnate

Cite this Entry

“Cachinnate.” Dictionary, Merriam-Webster, Accessed 5 Dec. 2023.

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