Showing sound judgment is a phrase that describes someone who is wise and makes decisions based on reason and good sense. The term can be broken down into two crossword solutions: SAPIENT (7 letters) and SANE (4 letters). SAPIENT is an adjective meaning wise or showing great knowledge, while SANE is an adjective meaning mentally sound or rational. Together, these two words describe someone who is wise and makes decisions based on reason and good sense.