01 a. Consisting of, or accompanied by, immoderate laughter.
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1.
Consisting of, or accompanied by, immoderate laughter.“Cachinnatory buzzes of approval.” — Carlyle.
Entry
1 sense
Webster, 1913
Cachinnatory
· Ca·chin·na·to·ry
· IPA /ˈkakɪnəˌtəɹi/