To take away; to subtract.
To taper.
To disappear gradually.
To make smaller.
To lessen the authority or dignity of; to put down; to degrade; to abase; to weaken; to nerf (in gaming).
To become less or smaller.
To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.
out of focus; blurry.
dulled or intentionally blunt.