From Proto-Indo-European *ḱerdʰ- (“herd”), like Proto-Germanic *herdō (“herd”), Proto-Slavic *čerda (“file, herd”) and Sanskrit शर्धस् (śardhas, “multitude, troop”). Connection of Welsh cordd (“group”) is less probable, as this may also derive from Proto-Celtic *koryos (“troop, tribe”).
κόρθῠς • (kórthus) f (genitive κόρθῠος); third declension
| Case / # | Singular | Dual | Plural | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominative | ἡ κόρθῠς hē kórthus |
τὼ κόρθῠε tṑ kórthue |
αἱ κόρθῠες hai kórthues | ||||||||||
| Genitive | τῆς κόρθῠος tês kórthuos |
τοῖν κορθῠ́οιν toîn korthúoin |
τῶν κορθῠ́ων tôn korthúōn | ||||||||||
| Dative | τῇ κόρθῠῐ̈ / κόρθυι têi kórthuï / kórthui |
τοῖν κορθῠ́οιν toîn korthúoin |
ταῖς κόρθῠσῐ / κόρθῠσῐν taîs kórthusi(n) | ||||||||||
| Accusative | τὴν κόρθῠν tḕn kórthun |
τὼ κόρθῠε tṑ kórthue |
τᾱ̀ς κόρθῡς / κόρθῠᾰς tā̀s kórthūs / kórthuas | ||||||||||
| Vocative | κόρθῠ kórthu |
κόρθῠε kórthue |
κόρθῠες kórthues | ||||||||||
| Notes: |
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