diagramless

English

Etymology

From diagram +‎ -less.

Adjective

diagramless (not comparable)

1. (crosswording) Having a blank grid, so that the solver must determine the positions of the black (non-lettered) squares as well as the answers to the clues.
   • 2009 June 28, “The Redesign”, in New York Times‎^[1]:

     I hope the addition of KenKen to the puzzles page is an accommodation to the new size, not preliminary to discontinuation of the cryptic, acrostic, diagramless, etc.

Noun

diagramless (plural diagramlesses)

1. (crosswording) A puzzle of this kind.