From Proto-Finnic *vainijo, borrowed from Proto-Norse (*hwainiō), from Proto-Germanic *hwainō (compare English whin, Old Norse hvein and Swedish ven). Cognate with Estonian vain.
vainio
| Inflection of vainio (Kotus type 3/valtio, no gradation) | |||
|---|---|---|---|
| nominative | vainio | vainiot | |
| genitive | vainion | vainioiden vainioitten | |
| partitive | vainiota | vainioita | |
| illative | vainioon | vainioihin | |
| singular | plural | ||
| nominative | vainio | vainiot | |
| accusative | nom. | vainio | vainiot |
| gen. | vainion | ||
| genitive | vainion | vainioiden vainioitten | |
| partitive | vainiota | vainioita | |
| inessive | vainiossa | vainioissa | |
| elative | vainiosta | vainioista | |
| illative | vainioon | vainioihin | |
| adessive | vainiolla | vainioilla | |
| ablative | vainiolta | vainioilta | |
| allative | vainiolle | vainioille | |
| essive | vainiona | vainioina | |
| translative | vainioksi | vainioiksi | |
| abessive | vainiotta | vainioitta | |
| instructive | — | vainioin | |
| comitative | See the possessive forms below. | ||