The quality of having a definite purpose

Usage examples of purposefulness.

The Pattern Juggler biomass scurried and squirmed to evade the track of the shadow, and the peculiar purposefulness of the motion reminded Naqi of an octopus she had seen in the terrestrial habitats aquarium on Umingmaktok, squeezing its way through impossibly small gaps in the glass prison of its tank.

Both men, however, had the same indefinable strength and purposefulness, qualities which set them apart from lesser men.

Combining a gay audacity with an unswervable purposefulness and an unparalleled mastery of science, he had blazed a brilliant trail across the nine worlds in defense of the right.