from The Century Dictionary and Cyclopedia
- Free from fault, defect, or deficiency.
Sorry, no etymologies found.
And glad I am, that the poor unfaulty baby is so justly beloved by Mr. B.
Of the unfaulty faultlessness of that original there has never been any denial worth listening to; the gainsayers having been persons who succumbed either to non-literary prejudice  of one kind or another or to the peculiarly childish habit of going against established opinion.
Let me wrap myself about in the mantle of my own integrity, and take comfort in my unfaulty intention!
Bethink you seriously whether it were not better to leave them thus unblemished, the simple products of unfaulty Nature, than use them to indite the wondrous things of my lord's imagination, whereof, all wondrous though they seem, no man shall ever be the wiser! "