Crossword clues for the word: SOUREST The word SOUREST has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for SOUREST Showing 1 to 9 of 9 results Clue(s) "Most like a pickle, perhaps" Most bitter Most crotchety Most embittered Most kumquat-esque Most like a lemon Most rancid Most tart Tart to the max