出典:Wiktionary
From Gothic, interpreted to mean "counsel spear," from Proto-Germanic *rēdaz + *gaizaz.[1] Compare Gothic (garēdaba) and * (*gais).
Radagaisus m sg (genitive Radagaisī); second declension
Second-declension noun, singular only.
| Case | Singular |
|---|---|
| Nominative | Radagaisus |
| Genitive | Radagaisī |
| Dative | Radagaisō |
| Accusative | Radagaisum |
| Ablative | Radagaisō |
| Vocative | Radagaise |
出典:Wikipedia