For those unfamiliar with Codeword puzzles, they provide a grid of words, similar to a normal crossword, but with no clues, rather a few initially provided letters, and a number in each square in the gird to indicate its (as yet unknown) letter.
6) For any word in the grid for which all squares are assigned to letters, Codeword Unlimited will highlight if that word is NOT an allowed word in the word list it uses to generate its codewords.
Codeword Unlimited is an application to play the popular word game known as Codeword (also known as Cipher crosswords or Cyptograms).
There is even an early learner mode with a limited number of words, aimed at children and English language learners.
Each game is assigned a difficulty level from 0 (easy) to 9 (very hard).