Crossword clues for the word: BACKUS The word BACKUS has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for BACKUS Showing 1 to 6 of 6 results Clue(s) "Jim of ""Gilligan's Island""" Jim who played Thurston Jim who was the voice of Mr. Magoo Late actor Jim Magoo's voice Voice of Magoo