Having no shine or lustre; dull.
Not exceptional; not worthy of special merit, attention, or interest; having no vitality.
Lacking brilliance or intelligence.
Lack of brightness or points of interest.
A person or thing of no particular brilliance or intelligence.
dulled or intentionally blunt.
out of focus; blurry.
To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.