To Blur

1. To make indistinct or hazy, to obscure or dim.
2. To smear, stain or smudge.
3. (intransitive) To become indistinct.
4. To cause imperfection of vision in; to dim; to darken.
5. (obsolete, transitive) To sully; to stain; to blemish, as reputation.
6. (graphical user interface, transitive) To transfer the input focus away from.

Synonyms

• (make indistinct or hazy): pixelate, smooth
• (move input focus from): unfocus

Antonyms

• sharpen