Lacking brightness or clearness, as a colour.
Pointless, foolish, lacking intellectual content or value.
Extremely stupid.
To make stupid.
To represent as stupid.
To reduce the intellectual demands of.
out of focus; blurry.
dulled or intentionally blunt.
To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.