What makes a pattern solver different
Unlike a general word finder that searches by prefix, suffix or contained letters, a pattern solver locks every known letter to a fixed position. That positional precision is what makes it so powerful for grids and clues: the answer must be the exact length of your pattern and must match every fixed letter, so the list of candidates is short and relevant.
The Pattern Solver treats a question mark, an underscore and a full stop identically, so you can use whichever blank symbol feels natural. It searches a large, well-maintained English dictionary, ranks the matches by score, and returns them the moment you press the button.