Absurd or frivolous jesting; trivial, foolish talk or joking; lighthearted nonsense.
Possibly from 'festive' combined with Greek 'logia' (discourse or speaking), or from an obsolete root meaning 'jesting'; the word is extremely rare in modern English.
This word is so obscure that most dictionaries don't include it—it apparently meant 'silly party talk' but was so specialized and unused that it simply disappeared from English, making it a perfect example of how thousands of words get invented but never survive.
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