Third-person singular simple present indicative form of upspring.(verb)
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Use "upspringing" in a sentence
"Again the stallion nickered, and all that moved was a flock of wild canaries, upspringing from the flowers and shrubs of the court, rising like a green-gold spray of light flung from the sunrise."
"His lowly, twig-like upspringing from the branchless, dried-up stump of"
"a flock of wild canaries, upspringing from the flowers and shrubs of the court, rising like a green-gold spray of light flung from the sunrise."