izvorni

1. original; initial
   Knjigu sam pročitao u izvornom obliku, na engleskom. — I read the book in the original, in English.
   Kuća je vraćena u izvorno stanje. — The house was restored to its original state.
2. authentic; traditional
   U ovom restoranu se sluša izvorna narodna muzika. — This restaurant plays authentic folk music.
3. (of a language speaker) native
   Naša profesorka je izvorni govornik španskog. — Our teacher is a native speaker of Spanish.

Izvorni govornik means "native speaker".