From Proto-Slavic *bujь (“mad, foolish”). Cognate with Upper Sorbian bujny, Czech bujný (“lush”), Old Church Slavonic боуи (bui, “stupid”), and Russian бу́йный (bújnyj, “impetuous, unbridled”).
bujny (adverb bujnje)
| Masculine singular | Feminine singular | Neuter singular | Dual | Plural | |
|---|---|---|---|---|---|
| Nominative | bujny | bujna | bujne | bujnej | bujne |
| Genitive | bujnego | bujneje | bujnego | bujneju | bujnych |
| Dative | bujnemu | bujnej | bujnemu | bujnyma | bujnym |
| Accusative | bujny bujnego (animate) |
bujnu | bujne | bujnej bujneju (animate) |
bujne bujnych (optional animate form) |
| Instrumental | bujnym | bujneju | bujnym | bujnyma | bujnymi |
| Locative | bujnem | bujnej | bujnem | bujnyma | bujnych |
Inherited from Proto-Slavic *bujьnъ.
bujny (comparative bujniejszy, superlative najbujniejszy, derived adverb bujnie)
| singular | plural | |||||
|---|---|---|---|---|---|---|
| masculine animate | masculine inanimate | feminine | neuter | virile (= masculine personal) | non-virile | |
| nominative | bujny | bujna | bujne | bujni | bujne | |
| genitive | bujnego | bujnej | bujnego | bujnych | ||
| dative | bujnemu | bujnej | bujnemu | bujnym | ||
| accusative | bujnego | bujny | bujną | bujne | bujnych | bujne |
| instrumental | bujnym | bujną | bujnym | bujnymi | ||
| locative | bujnym | bujnej | bujnym | bujnych | ||