Persnickety Definition Meaning MerriamWebsterPersnickety sense is reasonably difficult to understand. It refers to someone who is immensely particular and disapproving. A persnickety individual usually pay strict attention to detail and does not settle for less when it comes to quality and excellence. Their meticulousness can be perceived as commendable, but it can also exacerbate unreasonable disapproval and unjustified dissatisfaction. Being persnickety is typically connected with meticulous focus on specifics but can also be seen as a type of perfectionism.