PERSNICKETY Synonyms 9 Synonyms Antonyms for PERSNICKETY Fussy significance is reasonably tricky to comprehend. It refers to someone who is exceptionally picky and disapproving. A persnickety individual tends to pay strict attention to detail and has high standards when it comes to expectations and perfection. Their fastidious nature can be seen as admirable, but it can also intensify overly demanding disapproval and unjustified dissatisfaction. Being persnickety is frequently related to meticulous attention to detail but can also be seen as a type of obsessiveness.