Borrowed from a dialectal variant of Swedish reda (“order, ready”) such as räido with a sound change -d- > -l- characteristic of the western dialects of Finnish; probably also influenced by Swedish rejäl (“hefty, reliable”).
reilu (comparative reilumpi, superlative reiluin)
| Inflection of reilu (Kotus type 1/valo, no gradation) | |||
|---|---|---|---|
| nominative | reilu | reilut | |
| genitive | reilun | reilujen | |
| partitive | reilua | reiluja | |
| illative | reiluun | reiluihin | |
| singular | plural | ||
| nominative | reilu | reilut | |
| accusative | nom. | reilu | reilut |
| gen. | reilun | ||
| genitive | reilun | reilujen | |
| partitive | reilua | reiluja | |
| inessive | reilussa | reiluissa | |
| elative | reilusta | reiluista | |
| illative | reiluun | reiluihin | |
| adessive | reilulla | reiluilla | |
| ablative | reilulta | reiluilta | |
| allative | reilulle | reiluille | |
| essive | reiluna | reiluina | |
| translative | reiluksi | reiluiksi | |
| abessive | reilutta | reiluitta | |
| instructive | — | reiluin | |
| comitative | — | reiluine | |