Traduction persnickety en Français Fussy definition is rather hard to grasp. It refers to someone who is vitally particular and critical. A persnickety individual usually be meticulous and sets the bar high when it comes to expectations and excellence. Their attention to detail can be seen as admirable, but it can also lead to unreasonable criticism and avoidable dissatisfaction. Being persnickety is regularly associated with exact attention to detail but can also be seen as a type of perfectionism.