cachinnatory

English

Etymology

From cachinnate +‎ -ory.

Pronunciation

• (UK) IPA^(key): /ˈkakɪnəˌtəɹi/

Adjective

cachinnatory (comparative more cachinnatory, superlative most cachinnatory)

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.