Crossword clues for the word: HCH The word HCH has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for HCH Showing 1 to 7 of 7 results Clue(s) "Methylene group, chemically" Basic structural shape in Organic Chem FDR predecessor FDR's predecessor First Pres. born west of the Mississippi Pres. before FDR Pres. during the 1929 market crash