unfocus

un- +‎ focus

unfocus (third-person singular simple present unfocuses or unfocusses, present participle unfocusing or unfocussing, simple past and past participle unfocused or unfocussed)

1. (transitive) To bring out of focus.
   • 2007 October 14, Jack Pendarvis, “Buried Alive”, in New York Times‎:

     Pancake writes: “If you can unfocus your eyes right — and Corey can — wading the creek is like walking the aisle of a Wal-Mart made for Corey, with all the price tags saying free.”

2. (graphical user interface, transitive) To move the input focus away from.

   to unfocus a window

• (move input focus from): blur