cachinnate
cac·hin·nate
verb
1.
laugh loudly and in an unrestrained way
Origin
From Latin cachinnō (“laugh aloud”), of onomatopoeic origin.
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.