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Demanding meaning is quite tricky to comprehend. It refers to someone who is immensely selective and judgmental. A persnickety individual typically pay strict attention to detail and has high standards when it comes to expectations and perfection. Their attention to detail can be seen as admirable, but it can also magnify unreasonable disapproval and unnecessary dissatisfaction. Being persnickety is commonly connected with meticulous attention to detail but can
also be seen as a form of obsessiveness.
Persnickety definition in American English