Crossword clues for the word: HEYARNOLD The word HEYARNOLD has appeared as an answer to at least 2 crossword clues on different crossword puzzles. Crossword clues for HEYARNOLD Showing 1 to 2 of 2 results Clue(s) Nickelodeon cartoon with a nine-year-old title character Nickelodeon show whose protagonist has a football-shaped head