Demanding definition is rather tricky to comprehend. It refers to someone who is exceedingly meticulous and nitpicking. A persnickety individual typically be fastidious and sets the bar high when it comes to expectations and excellence. Their attention to detail can be perceived as commendable, but it can also magnify excessive criticism and unnecessary dissatisfaction. Being persnickety is regularly associated with detailed attention to detail but can also be seen as a type of obsessiveness.