Particular significance is fairly hard to grasp. It refers to someone who is vitally picky and critical. A persnickety individual tends to nitpick and sets the bar high when it comes to standards and excellence. Their attention to detail can be viewed as laudable, but it can also lead to unwarranted criticism and unnecessary dissatisfaction. Being persnickety is commonly related to detailed attention to detail but can also be seen as a type of perfectionism.
