What is another word for cachinnate?
Pronunciation: [kˈat͡ʃɪnˌe͡ɪt] (IPA) 
"Cachinnate" refers to loud, uncontrollable laughter, but it's not a word that's used very often in everyday language. If you're looking for synonyms to describe this type of laughter, there are plenty of options to choose from. "Chortle" and "guffaw" both evoke a sense of mirth and amusement, while "belly laugh" and "roar with laughter" both imply a deep and hearty guffaw. You might also choose to use "snicker" or "giggle" to describe a more subdued form of laughter. Ultimately, the word you choose will depend on the intensity and tone of the laughter, as well as the context in which it's being used.
