An old r/n-stem from Proto-Indo-European *ḱewh₁- (“to swell”), which is found thematicized in Avestan 𐬯𐬏𐬭𐬀 (sūra, “hole, lacuna”), as well as in Old Armenian սոր (sor, “hole”); a thematic n-stem occurs in Sanskrit शून (śūna, “tumid, tumescent”), सून (sūna, “emptiness, lack”), शून्य (śūnya, “empty, void”). An l-stem is supposed in κύλα (kúla, “holes under the eyelids”), but see κοῖλος (koîlos, “hollow”) too. These words are generally connected with the group of κῠ́ω (kúō, “to be pregnant with”), assuming a basic meaning "curvation", whence both "hole" and "vaulting".
κῠ́αρ • (kúar) n (genitive κῠ́ατος); third declension
| Case / # | Singular | Dual | Plural | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominative | τὸ κῠ́αρ tò kúar |
τὼ κῠ́ατε tṑ kúate |
τᾰ̀ κῠ́ατᾰ tà kúata | ||||||||||
| Genitive | τοῦ κῠ́ατος toû kúatos |
τοῖν κῠάτοιν toîn kuátoin |
τῶν κῠάτων tôn kuátōn | ||||||||||
| Dative | τῷ κῠ́ατῐ tôi kúati |
τοῖν κῠάτοιν toîn kuátoin |
τοῖς κῠ́ασῐ / κῠ́ασῐν toîs kúasi(n) | ||||||||||
| Accusative | τὸ κῠ́αρ tò kúar |
τὼ κῠ́ατε tṑ kúate |
τᾰ̀ κῠ́ατᾰ tà kúata | ||||||||||
| Vocative | κῠ́αρ kúar |
κῠ́ατε kúate |
κῠ́ατᾰ kúata | ||||||||||
| Notes: |
| ||||||||||||