Crossword clues for the word: STUPIDLY The word STUPIDLY has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for STUPIDLY Showing 1 to 8 of 8 results Clue(s) In a dumb (and dumber) way In a dumb manner In a silly way In a thickheaded way In an inane manner Like a ninny. Mindlessly, with no common sense Witlessly.