Intellectually dull or dim-witted.
Blunt; not sharp, pointed, or acute in form.
Obtuse-angled, having an obtuse angle.
Blunt, or rounded at the extremity.
Of sound, etc.: deadened, muffled, muted.
Indirect or circuitous.
Larger than one, and smaller than two right angles, or more than 90° and less than 180°.
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.