Fussy meaning is fairly difficult to understand. It refers to someone who is vitally picky and fault-finding. A persnickety individual usually be fastidious and has high standards when it comes to expectations and excellence. Their meticulousness can be viewed as laudable, but it can also magnify unwarranted censure and superfluous dissatisfaction. Being persnickety is commonly associated with precise attention to detail but can also be seen as a manifestation of pedantry.
Persnickety definition in American English