Etymology

cachinnate

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Today it means: To laugh immoderately, loudly, or too often. Full definition →

Latin cachinnō
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The story

  1. Latin · derived fromcachinnō“laugh aloud”
  2. English todaycachinnate

From Latin cachinnō (“laugh aloud”), of onomatopoeic origin.

Etymology from Wiktionary, CC BY-SA 4.0.