Fussy meaning is rather difficult to understand. It refers to someone who is vitally meticulous and judgmental. A persnickety individual usually pay strict attention to detail and has high standards when it comes to criteria and flawlessness. Their meticulousness can be viewed as laudable, but it can also magnify excessive disapproval and unnecessary dissatisfaction. Being persnickety is typically related to detailed attention to detail but can also be seen as a type of pedantry.