Possibly from dialectal Czech klavý, alternatively introduced into Polish by Roma from Slovak kľavý (“numb, rigid, torpid”) with a semantic shift. Compare Russian клёвый (kljóvyj).
klawy (comparative bardziej klawy, superlative najbardziej klawy, derived adverb klawo)
| singular | plural | |||||
|---|---|---|---|---|---|---|
| masculine animate | masculine inanimate | feminine | neuter | virile (= masculine personal) | non-virile | |
| nominative | klawy | klawa | klawe | klawi | klawe | |
| genitive | klawego | klawej | klawego | klawych | ||
| dative | klawemu | klawej | klawemu | klawym | ||
| accusative | klawego | klawy | klawą | klawe | klawych | klawe |
| instrumental | klawym | klawą | klawym | klawymi | ||
| locative | klawym | klawej | klawym | klawych | ||