Dramatist is brilliant, so educational — Norwegian originally (5)
I believe the answer is:
ibsen
'dramatist' is the definition.
(Ibsen is an example)
'is brilliant so educational norwegian originally' is the wordplay.
'originally' says to take the initial letters.
The first letters of 'is brilliant so educational norwegian' is 'IBSEN'.
(Other definitions for ibsen that I've seen before include "foreign author" , "'Ghosts' writer" , "Norwegian playwright, d. 1906" , "Scandinavian playwright" , "Henrik -, dramatist from fourteen down (Hedda Gabler)" .)