Crossword clues for the word: CRACKUP The word CRACKUP has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for CRACKUP Showing 1 to 8 of 8 results Clue(s) "Blow a practical joke, maybe" Auto wreck Burst into laughter Burst out laughing Bust out laughing Go nuts Rent increased? Go to pieces Totally lose your composure when they praise you