To ingrain grime or dirt which is difficult to remove into (something); also (more generally), to make (something) dirty; to soil.
To smear, stain or smudge.
To cause imperfection of vision in; to dim; to darken.
To become indistinct.
To transfer the input focus away from.
To make indistinct or hazy, to obscure or dim.
In a state of doubt or confusion.
Something that appears hazy or indistinct
A smear, smudge or blot