zillionairen.
/ˌzɪljəˈnɛː/, U.S. /ˌzɪljəˈnɛ(ə)r/, /ˈzɪljəˌnɛ(ə)r/ colloquial (originally U.S.).
A person of enormous wealth.
ΘΚΠ
the mind > possession > wealth > [noun] > rich or wealthy person > person who has large amount of money
jingle-boya1640
four-millioneer1667
plum1709
millionary1786
millionaire1795
money bag1820
millionista1843
trimillionaire1848
multimillionaire1858
billionaire1861
millioner1865
trillionaire1873
quadrillionairea1876
thousandaire1896
milliardaire1897
multibillionaire1906
zillionaire1926
multi1950
mega-millionaire1968
squillionaire1979
1926 Oakland (Calif.) Tribune 13 Dec. 26/3 A fortune left by his uncle, ‘a zillionaire’.
1959 I. Fleming Goldfinger iv. 50 He's a zillionaire himself... He's crawling with money.
1969 Daily Tel. 15 Aug. (Colour Suppl.) 21/3 A sprinkling of..Texas zillionaires, film stars, socialites and international playboys.
1999 Time 11 Oct. 34/1 Silicon Valley zillionaires make in 15 minutes on the stock market what they pay their housekeepers in a year.
This entry has been updated (OED Third Edition, March 2021; most recently modified version published online March 2022).
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n.1926