The term 'Fat Cat' is used to describe a wealthy person who has accumulated a large amount of money and power. The crossword solutions for this term are MONEYBAGS (9 letters), NABOB (5 letters), MOGUL (5 letters), and TYCOON (6 letters). MONEYBAGS is a slang term for someone who is very wealthy, while NABOB is an archaic term for a wealthy man. MOGUL is a term used to describe a powerful businessperson, and TYCOON is another word for a wealthy and influential person.