Fussy definition is somewhat hard to grasp. It refers to someone who is immensely particular and fault-finding. A persnickety individual usually be fastidious and has high standards when it comes to criteria and perfection. Their fastidious nature can
be viewed as laudable, but it can also exacerbate extreme censure and avoidable dissatisfaction. Being persnickety is often related to thorough focus on specifics but can also be seen as a type of pedantry.