Particular meaning is quite hard to grasp. It refers to someone who is extremely particular and disapproving. A persnickety individual typically be fastidious and has high standards when it comes to quality and flawlessness. Their attention to detail can be viewed as laudable, but it can also exacerbate extreme censure and unnecessary dissatisfaction. Being persnickety is commonly related to detailed attention to detail but can also be seen as a manifestation of perfectionism.
persnickety in Traditional Chinese Cambridge Dictionary
