Crossword clues for the word: PPPS The word PPPS has appeared as an answer to at least 10 crossword clues on different crossword puzzles. Crossword clues for PPPS Showing 1 to 10 of 10 results Clue(s) "Third afterthought, in a ltr." Afterthought #3: Abbr. Directions in music. Letter-writer's third afterthought Long letter extender Third addendum to a letter Third afterthought in a letter: Abbr. Third afterthought in a missive: Abbr. Third line at the bottom: Abbr. Thought after an after-afterthought: Abbr.