出典:Wiktionary
Back-formation from anecdota, reinterpreting the nominative neuter plural case ending -a as a Latin case ending (単数形: -um), rather than (as is etymologically-consistent) as an Ancient Greek case ending (singular: -on, from -ον (-on)); perhaps reinforced by Latin anecdotum.
From Ancient Greek ἀνέκδοτος (anékdotos, “accounts unpublished”), from ᾰ̓ν- (an-, “negative prefix”) (English an-) + ἔκδοτος (ékdotos, “published”), from ἐκδῐ́δωμῐ (ekdídōmi, “to publish”), from ἐκ (ek, “out”) + δῐ́δωμῐ (dídōmi, “to give”).
Second-declension noun (neuter).
| Case | Singular | Plural |
|---|---|---|
| Nominative | anecdotum | anecdota |
| Genitive | anecdotī | anecdotōrum |
| Dative | anecdotō | anecdotīs |
| Accusative | anecdotum | anecdota |
| Ablative | anecdotō | anecdotīs |
| Vocative | anecdotum | anecdota |