Wiktionary
unsharpen
vb. (context transitive English) To undo a sharpening operation on (an image).
Usage examples of "unsharpen".
He moved his hands feebly to the unsharpened tang, where the hilt would go, and pushed himself up, and somehow managed to stand.
Reminded they were stone, he flipped Harvester and slashed with the back of the blade, for a cubit-long edge below the hook was unsharpened and double thick for strength.
Tracy Ammes said, chewing nervously on the unsharpened end of a Staedtler Mars-Lumograph 3H pencil as she searched.
Empleado was unmollified, "but unlike the unsharpened butterknives affected by our Navy, this is more than a ceremonial accessory!