Particular meaning is rather tricky to comprehend. It refers to someone who is vitally selective and critical. A persnickety individual frequently pay strict attention to detail and has high standards when it comes to expectations and perfection. Their meticulousness can be perceived as commendable, but it can also intensify excessive censure and superfluous dissatisfaction. Being persnickety is typically connected with detailed focus on specifics but can also be seen as a type of obsessiveness.