billionaire

/ˌbɪl.i.əˈnɛə(ɹ)/

//ˌbɪl.i.əˈnɛə(ɹ)// noun

By · According to Wiktionary data (CC BY-SA) ·

"billionaire" is a 11-letter English headword indexed on PlainSpell.

The verdict

“billionaire” has 13 generated spelling variants in the English index at frequency #10,168. The variants make it a useful spelling check.

#10,168
frequency rank, English
4,121
“B” headwords
13
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Somebody whose wealth is at least one billion (10⁹) currency units.

Corpus desk

Index EN-billionaire · billionaire · English

billionaire · rank #10,168 · 13 variants · 0 confusables

  • FREQ-MID #10,168
  • LEN-MEGA 11 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-HIGH 13 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH biased

Nearest frequency peer: biased (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rank peers near misspelling magnet “billionaire”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “billionaire” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for billionaire
PropertyValue
Headwordbillionaire
LanguageEnglish
Part of speechNoun
IPA/ˌbɪl.i.əˈnɛə(ɹ)/
Letters11
Frequency rank#10,168
Misspellings tracked13
Confusable pairs0
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “billionaire”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).billionairelands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “biased” (#10,167), “betrayed” (#10,166), “brewing” (#10,170). Among 4,121 “B” headwords, “billionaire” is #10,168. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around billionaire (IPA /ˌbɪl.i.əˈnɛə(ɹ)/), anoun. Corpus frequency is #10,168 among 4,121 “B” headwords. Dominant gloss: "Somebody whose wealth is at least one billion (10⁹) currency units.".

Our generated misspelling index lists 13 likely wrong-spelling variants for billionaire, with forms such as "bbillionaire", "bililonaire", and "bilionaire". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From billion + -aire. The correct English form is billionaire, spelled B-I-L-L-I-O-N-A-I-R-E.

Definition

  1. 1
    Somebody whose wealth is at least one billion (10⁹) currency units.

Recorded use

Wiktionary examples

These source excerpts show how billionaire appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Private-equity nabobs bristle at being dubbed mere financiers.[…]Much of their pleading is public-relations bluster. Clever financial ploys are what have made billionaires of the industry’s veterans. “Operational improvement” in a portfolio company has often meant little more than promising colossal bonuses to sitting chief executives if they meet ambitio…
  2. The ranks of the billionaire class last year grew by just over 200 to nearly 2,770 people. Their wealth skyrocketed by $2.1 trillion — three times faster than the year before — to a total of $15 trillion. In the United States alone, where 816 billionaires reside, the net worth of this group soared by $1.4 trillion.

Etymology

From billion + -aire.

This word in other languages

multimillonario(Español)milliardaire(Français)Milliardär(Deutsch)

Common misspellings

Also misspelled as:

  • bbillionaire
  • bililonaire
  • bilionaire
  • billinoaire
  • billioanire
  • billionaier
  • billionairre
  • billionarie
  • billioniare
  • billionnaire
  • billoinaire
  • blilionaire
  • ibllionaire

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of billionaire - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

bbillionaire1bililonaire2bilionaire1billinoaire2billioanire2billionaier2billionairre1billionarie2
Edit distance from "billionaire"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "billionaire"?
"billionaire" is spelled B-I-L-L-I-O-N-A-I-R-E. The IPA pronunciation is /ˌbɪl.i.əˈnɛə(ɹ)/.
What does "billionaire" mean?
As a noun, "billionaire" means: Somebody whose wealth is at least one billion (10⁹) currency units.
What are common misspellings of "billionaire"?
Common misspellings include "bbillionaire", "bililonaire", "bilionaire", "billinoaire", "billioanire". The correct spelling is "billionaire".
How do you pronounce "billionaire"?
The IPA (International Phonetic Alphabet) transcription for "billionaire" is /ˌbɪl.i.əˈnɛə(ɹ)/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "billionaire"?
From billion + -aire. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "billionaire", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

calculation#10,173decorations#10,189designation#10,192theological#10,143

Similar misspelling depth

Headwords with a similar count of attested misspellings (13 here; floor ≥5).

admissions13 variantscatalyst13 variantsaccountant13 variantsvalentine13 variants

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list