To the sixth declension belongs feminine nouns which ends with -s in singular nominative.
For nouns of sixth declension the consonants preceding case ending is to be palatalised in plural genitive:
| Consonant(s) before ending | Palatalised to |
| l | ï |
| n | ò |
| s | ð |
| t | ð |
| v | vj |
| z | þ |
| sn | ðò |
| kst | kð |
The case endings for fifth declension nouns are given in following table ( diminutives has no ending in singular vocative ):
| Nom. | Gen. | Dat. | Acc. | Instr. | Loc. | Voc. | |
| sing. | -s | -s | -ij | -i | -i | -î | -s |
| plur. | -is | -u | -îm | -is | -îm | -îs | -is |
| Nominative | gov-s | gov-is |
| Genitive | gov-s | govj-u |
| Dative | gov-ij | gov-îm |
| Accusative | gov-i | gov-is |
| Instrumental | gov-i | gov-îm |
| Locative | gov-î | gov-îs |
| Vocative | gov-s | gov-is |