Heinous crossword clue Heinous is a single word clue made up of 7 letters. We most recently saw this clue in 'The Daily Mail Quick' on Tuesday, 06 July 2021 with the answer being EVIL, we also found EVIL to be the most popular answer for this clue. Before we get to our crossword answers for 'Heinous', take a look at the definitions and example uses below, sometimes ...