What a funny word, ‘cachinnate’!
cachinnate \ KAK-uh-neyt \ , verb;
1. To laugh loudly or immoderately.
His long nose, thick lips and crafty, bulging eyesseemed tense with the urge to cachinnate.
–– Anton Pavlovich Chekhov, Ronald Hingley, TheSteppe and Other Stories
I observe my fellow baskers snap, cachinnate, straighten out government policy. That’s the wonderof abroad.
— Tibor Fischer, The Thought Gang
Cachinnate evolves into the English cackle, but derives from the Sanskrit kakhati, “laughs.”