A state of intense joy and triumph, or the quality of being triumphantly happy.
From Latin exsultantia, derived from exsultans (jumping out, exulting). The suffix -ance (state or quality) transforms the verb into an abstract noun describing the feeling itself.
This is the grandest way to say 'being really happy' — it's the noun form of exult, and it captures not just happiness but the specific kind of triumphant joy you feel when you've overcome something difficult.
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