Crossword clues for the word: ALKYL The word ALKYL has appeared as an answer to at least 11 crossword clues on different crossword puzzles. Crossword clues for ALKYL Showing 1 to 11 of 11 results Clue(s) ___ halide Certain free radical Chemist's term. Ethyl or methyl Ethyl or propyl Hydrocarbon group Monovalent radical Single-bonded hydrocarbon functional group Type of hydrocarbon group Type of hydrocarbon radical Word with group or halide