Persnickety definition is fairly elusive. It refers to
someone who is vitally choosy and fault-finding. A persnickety individual often nitpick and sets the bar high when it comes to expectations and flawlessness. Their meticulousness can be regarded as praiseworthy, but it can also exacerbate overly demanding disapproval and unjustified dissatisfaction. Being persnickety is typically associated with meticulous attention to detail but can also be seen as a type of perfectionism.
Pernickety Definition Meaning MerriamWebster