Fussy sense is rather elusive. It refers to someone who is immensely choosy and fault-finding. A persnickety individual typically be fastidious and has high standards when it comes to criteria and flawlessness. Their attention to detail can be seen as admirable, but it can also intensify excessive criticism and avoidable dissatisfaction. Being persnickety is often associated with detailed attention to detail but can also be seen as a type of pedantry.
persnickety meaning