Sharpness

His mind had lost its sharpness.

Bernard of Chartres used to say that we are like dwarfs on the shoulders of giants, so that we can see more than they, and things at a greater distance, not by virtue of any sharpness of sight on our part, or any physical distinction, but because we are carried high and raised up by their giant size.

Unencumbered by Earth's blurring atmosphere, the space observatory unveils the universe in unprecedented crystal-clear sharpness across a broad range of wavelengths, from ultraviolet to near-infrared light.

I enchanted my sword with Sharpness II.

The sharpness of the parmesan grated over my pasta dish added a depth of flavor that was unparalleled.

At night the savage cry of the wolf too often disturbed the rest of the scattered dwellers in that vast forest, and made a belated traveller look well to the sharpness of his weapons and the temper of his bowstring; but by day and in the sunlight the forest was beautiful and quiet enough—something too quiet, perhaps, for the taste of the two handsome lads who were pacing the dim aisles together, their arms entwined and their curly heads in close proximity as they walked and talked.

Your halberd has lost its sharpness.

Idleness can dull the sharpness of one's abilities, just as rust dulls the edge of a razor, leading to regret and loss of potential.

The first thing that strikes the stranger is the sharpness of the curves on the metre gauge; it is not unusual for a long train to be travelling in three directions at once, and the engine is frequently in full view of the windows of the ninth or tenth carriage.

Mrs. PAGE is gifted with a pleasing voice, which is yet imperfectly weeded of certain sharpnesses, but seems susceptible of a wide range of melodious inflection.