Crossword clues for the word: SDN The word SDN has appeared as an answer to at least 2 crossword clues on different crossword puzzles. Crossword clues for SDN Showing 1 to 2 of 2 results Clue(s) """Not gonna happen. Didn't you hear me the first time?"" (1 4 2)" """Not gonna happen. Didn't you hear me the first time?"""