Magnanimity
Etymology
From Latin magnanimitas, "greatness of soul," combining magnus, "great," and animus, "soul, spirit, mind." The image is literally a big spirit — one roomy enough not to be cramped by envy or spite. Aristotle prized the trait as the crown of the virtues, and the word still names that expansive, unpetty grandeur of character.
noun · /mag-nuh-NIM-ih-tee/
Generosity and nobility of spirit, especially the grace to forgive and to rise above pettiness.
What it names
The largeness of soul that lets someone be gracious toward rivals, unbothered by slights, and generous where a smaller person would score points.
Example
In a rare act of magnanimity, the winner devoted half her speech to praising the rival she had just defeated.
Related idea
Munificence is lavish generosity with money and gifts; magnanimity is generosity of spirit — the greatness of soul that forgives, and refuses to be small.