Crossword clues for the word: HERCULEAN The word HERCULEAN has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for HERCULEAN Showing 1 to 4 of 4 results Clue(s) "Almost impossible, as a task" "Formidable, as a task" An ulcer he developed from labour hard and dangerous Requiring superhuman effort