chortle
noun
plural chortles
: a laugh or chuckle expressing pleasure or amusement
a chortle of delight
I hear a catbird's bubbling notes, sounding like the bird is half strangling itself to get them out, the rapid-tonguing chortle of a red-bellied woodpecker …—
John P. Wiley, Jr.
The grin escalates into a chuckle, the chuckle to a chortle.—
Robert Palm
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Merriam-Webster unabridged



