Choosy sense is somewhat hard to grasp. It refers to someone who is extremely picky and fault-finding. A persnickety individual tends to be fastidious and sets the bar high when it comes to standards and perfection. Their fastidious nature can be seen as admirable, but it can also magnify unreasonable criticism and avoidable dissatisfaction. Being persnickety is often related to thorough focus on specifics but can also be seen as a form of perfectionism.
persnickety in Traditional Chinese Cambridge Dictionary
