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zillion

/ˈzɪljən/noun

zillion is spelled Z-I-L-L-I-O-N: 7 letters and 2 syllables. It appears about once in every 2 million words in written English, the 45,363rd most frequent word form (wordfreq, 2021 data). As a noun, zillion means “An unspecified large number (of)” (English Wiktionary, September 2026). The plural of zillion is zillions.

How many letters and syllables are in zillion?

Letters7: Z-I-L-L-I-O-N
Syllables2 (from its American pronunciation)
In writingabout once in every 2 million words; the 45,363rd most frequent word form
Wrong spellings searchednone measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is zillion?

Zillion appears about once in every 2 million words in written English, the 45,363rd most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce zillion?

  • /ˈzɪljən/

Zillion has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-uk-zillion.ogg, Wikimedia Commons (author and licence on each file's page).

Forms of zillion

  • zillions plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does zillion mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    slangAn unspecified large number (of).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Zillion in Spanish, French, German and Portuguese

In the sense unspecified large number:

LanguageWords
Frenchtrouzillion
Portuguesezilhão, zilião
Spanishchorrocientos, chorromil, cuchucientos, cuchumil, quichicientas, sepetecientos

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does zillion come from?

See -illion. An arbitrary coinage, appearing by 1916, on analogy of million, billion, trillion.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after zillion