Nietzsche, It Is __ to Declare Oneself Wrong

This page is the CodyCross answer for the clue below from African grasslands, Group 1552, Puzzle 5 (Jackalberry Trees).

Question is: Nietzsche, It Is __ to Declare Oneself Wrong

and the answer is: NOBLER

Word Meaning:

NOBLER — comparative form of noble: more noble

Definitions from Wiktionary.