Pernickety Definition Meaning MerriamWebsterPersnickety importance is reasonably tricky to comprehend. It refers to someone who is immensely selective and nitpicking. A persnickety individual usually nitpick and does not settle for less when it comes to expectations and excellence. Their fastidious nature can be regarded as praiseworthy, but it can also intensify unwarranted criticism and superfluous dissatisfaction. Being persnickety is typically related to exact focus on specifics but can also be seen as a type of perfectionism.