Crossword clues for the word: SLAPPER The word SLAPPER has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for SLAPPER Showing 1 to 7 of 7 results Clue(s) Back nuisance British prostitute Knee-___ (funny joke) Knee-___ (very funny joke) One who smacks Openhanded smiter Palm smacker