Crossword clues for the word: QUIDPROQUO The word QUIDPROQUO has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for QUIDPROQUO Showing 1 to 9 of 9 results Clue(s) Equal substitution Equitable exchange Fair exchange Fair trade Literally, "something for something" One hand washing the other, so to speak One thing in return for another. Reciprocal exchange Relative of tit for tat