Synonyms for Magnanimous (same or very similar meaning)
WordNet sense 1 (noble and generous in spirit):
greatheartedWordNet sense 2 (having or showing or indicative of high or elevated character):
nobleWordNet sense 3 (generous and understanding and tolerant):
big, largeWordNet sense 4 (not petty in character and mind):
generousFrom the ODE community, based on WordNetadd/edit