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bajillionaire

A playful, hyperbolic slang term for someone who is fabulously, almost unimaginably rich.

bɑd͡ʒiˈlɛnɚi244 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 28, 2026Global

A playful, hyperbolic slang term for someone who is fabulously, almost unimaginably rich. 'Bajillion' is itself a humorous indefinitely large number (like 'gazillion' or 'zillion'), so a 'bajillionaire' is someone whose wealth has moved beyond ordinary millionaire or billionaire territory into the realm of cartoonish excess. Used in casual, humorous conversation — you might call someone a bajillionaire in jest or use it to mock the obscene wealth of tech titans. Not pejorative by default; tone is usually light and absurdist.

If I were a bajillionaire, the first thing I'd do is buy back every pair of sneakers I've ever regretted selling.
Origin: Formed from 'bajillion' (a humorous invented very large number, itself modelled on 'billion'/'trillion') + '-aire' (from 'millionaire'/'billionaire'). Likely coined in late 20th–early 21st century American English. Editorial expansion authored on Slangora.
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#2·Apr 28, 2026Global

A humorous slang noun for someone who is fabulously, almost incomprehensibly wealthy. Built on the same pattern as billionaire and trillionaire but with the made-up bajillion indicating a number beyond reckoning. Used with affectionate mockery, envy, or absurdist exaggeration. Sits alongside gazillionaire as a camp way to describe extreme wealth without the precision of actual financial figures. The word is at its most effective when used to describe someone so wealthy that normal financial vocabulary feels inadequate to convey the scale.

After the IPO she told her friends she was basically a bajillionaire, which they all chose to believe.
Origin: From bajillion (a humorous, made-up large number) plus -aire (suffix from billionaire/millionaire denoting extreme wealth). Editorial expansion authored on Slangora.
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#3·Apr 26, 2026Global

(humorous, slang) An incredibly rich person.

For parents

Bajillionaire means: An incredibly rich person.. It is informal slang, fine in casual speech but not suited to formal contexts. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.

For ESL learners

bajillionaire means: An incredibly rich person.. Register: very informal, slang. Suitable only for casual conversation, chat and social media. Do not use in business, academic or news writing. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.

Cluster: wealthy
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.

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