'magnanimity' originates from Latin, specifically the word 'magnanimitas,' where 'magnus' meant 'great' and 'animus' meant 'soul or spirit.'

'magnanimitas' transformed into the Old French word 'magnanimité,' and eventually became the modern English word 'magnanimity' through Middle English.

Initially, it meant 'greatness of spirit,' and this meaning has largely remained the same in modern usage.