Waywardness

He made no offer of molestation or sociability, but kept aloof on one side of the road, jogging along on the blind side of old Gunpowder, who had now got over his fright and waywardness.

Heretofore, the mother, while loving her child with the intensity of a sole affection, had schooled herself to hope for little other return than the waywardness of an April breeze, which spends its time in airy sport, and has its gusts of inexplicable passion, and is petulant in its best of moods, and chills oftener than caresses you, when you take it to your bosom; […]

The merest waywardness in a robotic picker can tangle up the whole shed’s operations and delay thousands of deliveries.