Cachinnatory

Pronunciation

• UK IPA: /ˈkakɪnəˌtəɹi/

Origin

From cachinnate + -ory.

Full definition of cachinnatory

Adjective

1. Pertaining to loud or immoderate laughter.
• 1835, Edgar Allan Poe, ‘King Pest’:But these jests, and others of a similar nature, had evidently produced, at no time, any effect upon the cachinnatory muscles of the tar.