Particular definition is somewhat difficult to understand. It refers to someone who is extremely choosy and judgmental. A persnickety individual often be meticulous and does not settle for less when it comes to standards and excellence. Their attention to detail can be regarded as praiseworthy, but it can also magnify excessive disapproval and avoidable dissatisfaction. Being persnickety is frequently associated with detailed attention to detail but can also be seen as a form of pedantry.