Unknown. There are no known cognates, and theories about borrowing from Germanic or Baltic have been discarded.
rahtu
Nowadays mostly used in idioms, such as the one mentioned above.
| Inflection of rahtu (Kotus type 1*F/valo, t-d gradation) | ||||
|---|---|---|---|---|
| nominative | rahtu | rahdut | ||
| genitive | rahdun | rahtujen | ||
| partitive | rahtua | rahtuja | ||
| illative | rahtuun | rahtuihin | ||
| singular | plural | |||
| nominative | rahtu | rahdut | ||
| accusative | nom. | rahtu | rahdut | |
| gen. | rahdun | |||
| genitive | rahdun | rahtujen | ||
| partitive | rahtua | rahtuja | ||
| inessive | rahdussa | rahduissa | ||
| elative | rahdusta | rahduista | ||
| illative | rahtuun | rahtuihin | ||
| adessive | rahdulla | rahduilla | ||
| ablative | rahdulta | rahduilta | ||
| allative | rahdulle | rahduille | ||
| essive | rahtuna | rahtuina | ||
| translative | rahduksi | rahduiksi | ||
| abessive | rahdutta | rahduitta | ||
| instructive | — | rahduin | ||
| comitative | See the possessive forms below. | |||