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Particular importance is rather difficult to understand. It refers to someone who is vitally picky and critical. A persnickety individual tends to pay strict attention to detail and does not settle for less when it comes to expectations and flawlessness. Their meticulousness can be regarded as praiseworthy, but it can also intensify excessive censure and avoidable dissatisfaction. Being persnickety is commonly associated with detailed focus on specifics but can also be seen as a form of obsessiveness.