Crossword clues for the word: FANATICISM The word FANATICISM has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for FANATICISM Showing 1 to 3 of 3 results Clue(s) "Santayana defines it as ""redoubling your effort when you have forgotten your aim""" Excessive zeal Irrational zeal