Fussy meaning is fairly difficult to understand. It refers to someone who is extremely meticulous and judgmental. A persnickety individual often nitpick and does not settle for less when it comes to quality and flawlessness. Their attention to detail can be seen as admirable, but it can also lead to overly demanding criticism and unjustified dissatisfaction. Being persnickety is typically associated with precise attention to detail but can also be seen as a form of perfectionism.