Persnickety definition is quite tricky to comprehend. It refers to someone who is extremely meticulous and nitpicking. 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 regarded as praiseworthy, but it can also magnify excessive disapproval and superfluous dissatisfaction. Being persnickety is often linked to thorough attention to detail but can also be seen as a manifestation of perfectionism.