Crossword clues for the word: DEFCON The word DEFCON has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for DEFCON Showing 1 to 9 of 9 results Clue(s) ___ 5 (peace) Measure of military alertness Mil. alert state protocol Military alert number Military alert quantifier Military alert status Military alert system Multilevel military readiness system Pentagon alert rating