adjective, spring·i·er, spring·i·est.
Examples from the Web for springiness
And thirdly, if we enquire why Cork has such a springiness and swelling nature when compress'd?
Sixthly, That the sudden flying asunder of the parts proceeds from their springiness.
His shoulders were as square as ever but something had gone from the springiness of his gait.The Kingdom of the Blind|E. Phillips Oppenheim
In all that countryside Bill possessed an absolute monopoly of springiness and elasticity.Jan|A. J. Dawson
Perhaps his step had lost its springiness, his coat its breezy freedom; but he had gained in dignity what was lost in quaintness.The Call of the Town|John Alexander Hammerton