Crossword clues for the word: HAPAX The word HAPAX has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for HAPAX Showing 1 to 3 of 3 results Clue(s) ___ legomenon (word or phrase used only once in a document or corpus) ___ legomenon (word that appears just once in a given corpus) ___ legomenon (word that appears only once in a manuscript)