We found one dictionary that defines the word supergenerosity:

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1. supergenerosity: Wiktionary

Definitions from Wiktionary (supergenerosity) ▸ noun:  Remarkable generosity. ▸ Words similar to supergenerosity ▸ Usage examples for supergenerosity ▸ Idioms related to supergenerosity ▸ Wikipedia articles (New!) ▸ Popular adjectives describing supergenerosity ▸ Words that often appear near supergenerosity ▸ Rhymes of supergenerosity ▸ Invented words related to supergenerosity