cachinnate

Verb

cachinnate (third-person singular simple present cachinnates, present participle cachinnating, simple past and past participle cachinnated)

1. (intransitive) To laugh immoderately, loudly, or too often.
   • The villain began to cachinnate and twirl his moustache.
   • There is a sense of spectral whirling through liquid gulfs of infinity, of dizzying rides through reeling universes on a comet’s tail, and of hysterical plunges from the pit to the moon and from the moon back again to the pit, all livened by a cachinnating chorus of the distorted, hilarious elder...1928 February, H[oward] P[hillips] Lovecraft, “The Call of Cthulhu. The Madness from the Sea.”, in Farnsworth Wright, editor, Weird Tales: A Magazine of the Bizarre and Unusual, volume XI, number 2...

   Synonyms:

   guffaw