Superlative form of springy: most springy.(adjective)
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Use "springiest" in a sentence
"Actually, it's the birds that seem springiest to me so far."
"We made, too, couches of fir-branches -- the springiest and most wholesome of beds in lieu of heather or gall, and laid down our weariness as a soldier would relinquish his knapsack, after John Splendid had bandaged my wounded shoulder."
"There was a dress length of the softest, springiest silk, the kind that creaks when you squeeze it, and it was of the shade that Pearl had seen in her dreams."