From Proto-Finnic *kërsa (compare Võro kõrźo), possibly borrowed from Proto-Germanic (compare Old Norse kjarr (“copsewood”)). The meaning "kid, child, brat" would in this case be a re-extraction from kersalapsi (literally “a child conceived/born in the bushes”).
kersa (colloquial)
| Inflection of kersa (Kotus type 9/kala, no gradation) | |||
|---|---|---|---|
| nominative | kersa | kersat | |
| genitive | kersan | kersojen | |
| partitive | kersaa | kersoja | |
| illative | kersaan | kersoihin | |
| singular | plural | ||
| nominative | kersa | kersat | |
| accusative | nom. | kersa | kersat |
| gen. | kersan | ||
| genitive | kersan | kersojen kersain rare | |
| partitive | kersaa | kersoja | |
| inessive | kersassa | kersoissa | |
| elative | kersasta | kersoista | |
| illative | kersaan | kersoihin | |
| adessive | kersalla | kersoilla | |
| ablative | kersalta | kersoilta | |
| allative | kersalle | kersoille | |
| essive | kersana | kersoina | |
| translative | kersaksi | kersoiksi | |
| abessive | kersatta | kersoitta | |
| instructive | — | kersoin | |
| comitative | See the possessive forms below. | ||
kersa o
kersa
Borrowed from Javanese ꦏꦂꦱ (karsa, “intention”), from Old Javanese karsa, kaharṣa (“desire, wish; desired”).
kersa (Sundanese script ᮊᮨᮁᮞ)