The term 'very particular' can be described by two crossword solutions: 'FUSSY' (5 letters) and 'CHOOSY' (6 letters). FUSSY is an adjective that means to be overly concerned with details or to be difficult to please. CHOOSY is also an adjective that means to be very selective or to be careful in making choices. Both words imply that someone is very particular about something, meaning they are not easily satisfied and have high standards.