What is persnickety?

Persnickety is an adjective that is used to describe someone who is very picky, fussy, or particular about their choices and preferences. The word can be used to describe someone who has very high standards and is hard to please. Often, people who are described as persnickety are very detail-oriented and may be easily annoyed by things that others might not even notice. This term is often used in a negative sense, suggesting that someone is being overly demanding or difficult to deal with. However, it can also be used in a positive sense to describe someone who is discerning and has good taste.