The term "picky" is an adjective that describes someone who has a particular preference for something, often to the point where they are very selective or choosey about it. This person may be fussy or fastidious in their choices and have high standards when it comes to what they like or want. They can also come across as being overly critical or demanding, particularly if others do not meet their expectations. In essence, the term "picky" is used to describe someone who has strong opinions about something and is not willing to compromise on those preferences.