Persnickety definition in American English Particular definition is rather tricky to comprehend. It refers to someone who is immensely selective and disapproving. A persnickety individual often be meticulous and does not settle for less when it comes to standards and perfection. Their fastidious nature can be regarded as praiseworthy,
but it can also intensify excessive criticism and unnecessary dissatisfaction. Being persnickety is commonly linked to meticulous attention to detail but can also be seen as a type of perfectionism.