From Proto-Slavic *zabavьnъ. By surface analysis, zabawa + -ny.
zabawny (comparative zabawniejszy, superlative najzabawniejszy, derived adverb zabawnie)
| singular | plural | |||||
|---|---|---|---|---|---|---|
| masculine animate | masculine inanimate | feminine | neuter | virile (= masculine personal) | non-virile | |
| nominative | zabawny | zabawna | zabawne | zabawni | zabawne | |
| genitive | zabawnego | zabawnej | zabawnego | zabawnych | ||
| dative | zabawnemu | zabawnej | zabawnemu | zabawnym | ||
| accusative | zabawnego | zabawny | zabawną | zabawne | zabawnych | zabawne |
| instrumental | zabawnym | zabawną | zabawnym | zabawnymi | ||
| locative | zabawnym | zabawnej | zabawnym | zabawnych | ||
Inherited from Proto-Slavic *zabavьnъ. By surface analysis, zabawa + -ny.
zabawny (comparative zabawniši, superlative najzabawniši, absolute superlative nanajzabawniši, excessive přezabawny, adverb zabawnje)
| singular | dual | plural | ||||||
|---|---|---|---|---|---|---|---|---|
| masculine | neuter | feminine | virile | nonvirile | virile | nonvirile | ||
| personal/animal | inanimate | |||||||
| nominative, vocative | zabawny | zabawne | zabawna | zabawnaj | zabawnej | zabawni | zabawne | |
| genitive | zabawneho zabawnoh¹ |
zabawneje | zabawneju | zabawnych | ||||
| dative | zabawnemu zabawnom¹ |
zabawnej | zabawnymaj | zabawnym | ||||
| accusative | zabawneho zabawnoh¹ |
zabawny | zabawne | zabawnu | zabawneju | zabawnej | zabawnych | zabawne |
| instrumental | zabawnym | zabawnej | zabawnymaj | zabawnymi | ||||
| locative | zabawnych | |||||||