出典:Wiktionary
From the root of reor and ratus + -tor, ultimately from the Proto-Indo-European elements *h₂r̥h₁- (“to arrange, count; to think”) and *-tōr (animate agent suffix).
Third-declension noun.
| Case | Singular | Plural |
|---|---|---|
| Nominative | rator | ratōrēs |
| Genitive | ratōris | ratōrum |
| Dative | ratōrī | ratōribus |
| Accusative | ratōrem | ratōrēs |
| Ablative | ratōre | ratōribus |
| Vocative | rator | ratōrēs |