@pangloss Time for me to troubleshoot some more on my end. Perhaps its an issue with one of my Firefox extensions. I'll report back whether or not I find the source of the problem.

@pangloss Lex Puzzles (there are both US and UK versions) is a a solitaire game I play in my Windows version. The player is presented with a rack and a board from an actual game played. The object is to get a higher score from that rack than a real player did. Your point total is the difference between the real player's score and your own. Your cumulative score is ranked against other players. In my web browser, the Lex Puzzles are under the "Practice" tab at the top. [I was unclear in my last response . I should have written, "I have not tried to play Lex Puzzles in the Android app because I can't figure out how to access it in the app. I do have the app installed and I do play Lexulous itself in the app. The "Define" button that doesn't work is the one in in "Lex Puzzles," not the Dictionary function in Lexulous.]

@pangloss I am playing on my PC (browser: Firefox 111.0.1). I don't believe the problem is related to words with no definitions because I only try to click "Define" when I have a word designated in the window as "is valid." Although my cursor icon correctly changes from an arrow to a finger pointing when I mouse over the "Define" button, nothing at all happens when I click the button. Everything else seems to be working fine. I have not tried to play in the Android app because I can't figure out how to access "Lex Puzzles" in the app. [Please let me know how to do this .]

The Dictionary tab in Lex Puzzles will tell me whether my word is valid, but nothing happens when I click the "Define" button. Is this button broken or is there a setting I need to check to get it to work properly?