Crossword clues for the word: EIGEN The word EIGEN has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for EIGEN Showing 1 to 6 of 6 results Clue(s) "Chemistry Nobelist, 1967" "Manfred ___, 1967 Chemistry Nobelist" 1967 Chemistry Nobelist 1967 chemistry Nobelist Manfred ___ Manfred ___, German Nobel Prize winner in chemistry Own: Ger.