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Definition of zillionaire

zillionaire

/ˌzɪljəˈnɛr/
zil · lion · aire
Plural:zillionaires
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zillionaire Lexical Profile

zillionaire Game Scores & Validity

• noun

1

An extremely or immeasurably wealthy person (used informally as hyperbole).

Example

"You do not have to be a zillionaire to start investing wisely for retirement."

Synonyms
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Antonyms
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• Rhymes for zillionaire

• Nearby Words

zilch
zilina
zillion
zillionaire
zillionth
zimbabwe
zimbabwean

Word Origin & Etymology

Coined in mid-20th-century American English as a humorous blend of 'zillion' (an imaginary huge number modeled on 'million' with the final letter of the alphabet 'z') and the suffix '-aire' from 'millionaire'.

Cite this Entry

Wordmom. (2026). Definition of Zillionaire. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/zillionaire
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