Synonyms for Grandeur (same or very similar meaning)
WordNet sense 1 (the quality of elevation of mind and exaltation of character or ideals or conduct):
nobility, nobleness, magnanimousnessWordNet sense 2 (the quality of being magnificent or splendid or grand):
brilliance, grandness, magnificence, splendor, splendourFrom the ODE community, based on WordNetadd/edit