Enter criteria and click Find Words
W first and M third gives eight words, and two of them are among the most common words in English.
They differ by a single letter in the fourth box and nothing else. O fills the second box in half this group, which is almost entirely those two plus WOMBS.
Beyond those three the group thins out quickly into forms most people have never met.
A takes the second box in the remaining entries, but none of them are words you would expect a puzzle to use, so the practical list stops at three.
If W, O and M are confirmed and the fourth box is open, you are almost certainly choosing between A and E. That single box decides it.
So guess whichever of the two you have not already eliminated elsewhere in the puzzle, and the other one follows immediately if you are wrong.
Yes, W, O, M, E, N. The plural changes the fourth letter rather than adding an S, which is what makes the pair so easy to mix up when reading tiles.
No. WARMS puts R in the third box and M in the fourth. All the right letters, one box out of place.
Unlikely by size, but the two words that dominate it are so common that if a puzzle does land here you will probably spot it fast.