Persnickety sense is rather hard to grasp. It refers to someone who is vitally picky and critical. A persnickety individual often be fastidious and does not settle for less when it comes to expectations and perfection. Their attention to detail can be viewed as laudable, but it can also intensify unwarranted censure and unnecessary dissatisfaction. Being persnickety is often connected with exact focus on specifics but can also be seen as a manifestation of perfectionism.