Crossword clues for the word: ATAVISM The word ATAVISM has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for ATAVISM Showing 1 to 8 of 8 results Clue(s) Biological reversion Resemblance to older ancestors Reversion Reversion to an earlier type Reversion to remote ancestry. Reversion to the primitive. Reversion to type. Throwback characteristic