This is the 8891st most frequent Polish word.
sebastian
"Sebastian" is a masculine given name of Greek origin, meaning "venerable" or "revered."
Here, 'Sebastian' is used as a proper noun referring to a person’s name, specifically the speaker's friend.
Sebastian jest moim najlepszym przyjacielem.
Sebastian is my best friend.
In this sentence, 'Sebastian' is employed as a proper noun to address someone directly, conveying the speaker's surprise or admiration towards him.
Ależ Sebastian, nie przypuszczałem, że jesteś takim artystą!
Oh, Sebastian, I never suspected you were such an artist!
Here, 'Sebastian' is analyzed as a name, explaining its etymological roots and meaning.