Dictionary

fat cat

noun

: an important, wealthy, or powerful person

Full Definition of FAT CAT

1
a :  a wealthy contributor to a political campaign fund
b :  a wealthy and privileged person
c :  big shot
2
:  a lethargic complacent person
fat–cat \ˈfat-ˌkat\ adjective
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First Known Use of FAT CAT

1928

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