Crossword clues for the word: SIRISAACNEWTON The word SIRISAACNEWTON has appeared as an answer to at least 2 crossword clues on different crossword puzzles. Crossword clues for SIRISAACNEWTON Showing 1 to 2 of 2 results Clue(s) Master of the Royal Mint in the early 1700s Rival of Gottfried Leibniz