weariless

Not at all, but because the work had grown to be a volume under his weariless hand.

From The Atlantic Monthly, Volume 20, No. 121, November, 1867 by Various

This lofty granite wall is bent this way and that by the restless and weariless action of glaciers just as if it had been made of dough.

From Steep Trails California, Utah, Nevada, Washington, Oregon, the Grand Canyon by John Muir

Or is it the wave and the weariless breeze, Or That she sees, Which hobbles away in the light o' the moon?—

From Weeds by the Wall Verses by Madison Julius Cawein

For many years before the settlement of the country the fur of the beaver brought a high price, and therefore it was pursued with weariless ardor.

From Steep Trails California, Utah, Nevada, Washington, Oregon, the Grand Canyon by John Muir

Day after day the storm continued, piling snow on snow in weariless abundance.

From Steep Trails California, Utah, Nevada, Washington, Oregon, the Grand Canyon by John Muir