Persnicketiness definition of persnicketiness by The Free Fussy meaning is reasonably hard to grasp. It refers to someone who is exceedingly picky and disapproving. A persnickety individual frequently pay strict attention to detail and sets the bar high when it comes to criteria and flawlessness. Their meticulousness can be regarded as praiseworthy, but it can also intensify overly demanding censure and avoidable dissatisfaction. Being persnickety is regularly linked to detailed attention to detail but can also be seen as a type of obsessiveness.