PERSNICKETY Synonyms 9 Synonyms Antonyms for PERSNICKETY Persnickety meaning is fairly tricky to comprehend. It refers to someone who is extremely meticulous and disapproving. A persnickety individual usually nitpick and does not settle for less when it comes to expectations and flawlessness. Their fastidious nature can be regarded as praiseworthy, but it can also lead to unwarranted disapproval and avoidable dissatisfaction. Being persnickety is frequently linked to thorough focus on specifics but can also be seen as a manifestation of pedantry.