Crossword clues for the word: HOWDOYOUKNOW The word HOWDOYOUKNOW has appeared as an answer to at least 1 crossword clue on different crossword puzzles. Crossword clues for HOWDOYOUKNOW Showing 1 to 1 of 1 results Clue(s) 2010 comedy-drama film starring Reese Witherspoon and Paul Rudd