Demanding meaning is quite difficult to understand. It refers to someone who is exceptionally meticulous and judgmental. A persnickety individual tends to
nitpick and has high standards when it comes to standards and flawlessness. Their attention to detail can be viewed as laudable, but it can also lead to extreme censure and
avoidable dissatisfaction. Being persnickety is typically linked to exact focus on specifics but can also be seen as a manifestation of perfectionism.
Persnickety definition in American English