Crossword clues for the word: FATTENUP The word FATTENUP has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for FATTENUP Showing 1 to 6 of 6 results Clue(s) Add pounds to purposely Add some meat to Add some meat to the bones Feed for slaughter (2) Prepare for sumo? Put some meat on one's bones