出典:Wiktionary
Borrowed from Old French or Old Occitan feu/fieu, which was borrowed from Frankish *fehu (“livestock, cattle”),[1] which stems from Proto-Germanic *fehu.
The -d- in feudum, feodum was inserted under influence of Latin allodium,[2] also of Frankish origin. Or possibly the term is borrowed from Frankish *fehu-ôd.[3]
Latin feudum is cognate to Catalan feu, which too is borrowed from Frankish *fehu.[4] It is also a doublet of pecu, which is inherited from Proto-Indo-European *péḱu, the same source as of Germanic *fehu.
feudum n (genitive feudī); second declension
Second-declension noun (neuter).
| Case | Singular | Plural |
|---|---|---|
| Nominative | feudum | feuda |
| Genitive | feudī | feudōrum |
| Dative | feudō | feudīs |
| Accusative | feudum | feuda |
| Ablative | feudō | feudīs |
| Vocative | feudum | feuda |