Fussy meaning is rather tricky to comprehend. It refers to
someone who is immensely selective and disapproving. A persnickety individual often be fastidious and sets the bar high when it comes to standards and flawlessness. Their meticulousness can be seen as admirable, but it can
also magnify excessive disapproval and superfluous dissatisfaction. Being persnickety is frequently associated with precise focus on specifics but can also be seen as a form of perfectionism.
persnickety in Traditional Chinese Cambridge Dictionary
