2 Verbs to Use for the Word spontaneousness

No shadow of frigid respectability hangs over people's actions and freezes spontaneousness.

His second book, "The Scouring of the White Horse," was less successful,in part from the narrower range of its interest, and still more, perhaps, because it lacked the spontaneousness of the "School-Days."

2 Verbs to Use for the Word  spontaneousness