Particular significance is quite elusive. It refers to someone who is exceptionally meticulous and disapproving. A persnickety individual tends to be meticulous and has high standards when it comes to expectations and perfection. Their attention to detail can be perceived as commendable, but it can also magnify unreasonable disapproval and unnecessary dissatisfaction. Being persnickety is typically associated with thorough attention to detail but can also be seen as a type of perfectionism.