A smear, smudge or blot
Something that appears hazy or indistinct
To cause imperfection of vision in; to dim; to darken.
To become indistinct.
To transfer the input focus away from.
To smear, stain or smudge.
To make indistinct or hazy, to obscure or dim.
In a state of doubt or confusion.
Dirt, filth.
Lack of cleanliness.
Indecency; corruption; unkindness, meanness, spite, harshness, cruelty.
A nasty action, object, quality, etc. (all senses of nasty).
Unpleasantness, disagreeableness (to the senses).