Having laughed loudly or immoderately; characterized by excessive or unrestrained laughter.
Past tense and adjective form of 'cachinate,' from Latin 'cachinnus' (loud laughter). The suffix '-ated' indicates a past state or quality. The word maintains the formal, slightly archaic tone of its Latin root.
This is the kind of wonderfully specific old word that captures a moment perfectly—imagine saying someone was 'cachinnated' instead of just saying they laughed really hard; it sounds so much more dignified!
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