Persnicketiness definition of persnicketiness by The Free Fussy significance is somewhat tricky to comprehend. It refers to someone who is immensely selective and disapproving. A persnickety individual often be fastidious and does not settle for less when it comes to expectations and flawlessness. Their meticulousness can be seen as admirable, but it can also intensify overly demanding censure and unjustified dissatisfaction. Being persnickety is typically associated with precise focus on specifics but can also be seen as a manifestation of pedantry.