出典:Wiktionary
Learned borrowing from Late Latin helluō librōrum (“glutton of books”), from Latin helluō (“glutton; squanderer”) + librōrum (“of books”).[1] Helluō is derived from helluārī + -ō (suffix forming masculine agent nouns, nicknames, かつ other designations);[2] helluārī is the present active infinitive of helluor (“to be a glutton, gormandize”), further etymology unknown. Librōrum is the genitive plural form of liber (“book; inner bark of a tree”), ultimately from Proto-Indo-European *lewbʰ- (“to cut off, peel”)).
The plural form is also borrowed from Late Latin helluōnēs librōrum.
helluo librorum (複数形 helluones librorum)
Third-declension noun with an indeclinable portion.
| Case | Singular | Plural |
|---|---|---|
| Nominative | helluō librōrum | helluōnēs librōrum |
| Genitive | helluōnis librōrum | helluōnum librōrum |
| Dative | helluōnī librōrum | helluōnibus librōrum |
| Accusative | helluōnem librōrum | helluōnēs librōrum |
| Ablative | helluōne librōrum | helluōnibus librōrum |
| Vocative | helluō librōrum | helluōnēs librōrum |