Particular meaning is fairly difficult to understand. It refers to someone who is extremely picky and nitpicking. A persnickety individual frequently be fastidious and has high standards when it comes to standards and excellence. Their fastidious nature can be viewed as laudable, but it can also lead to unreasonable disapproval and avoidable dissatisfaction. Being persnickety is commonly linked to precise attention to detail but can also be seen as a type of pedantry.