FBI
/ˈɛf.biː.aɪ/noun
FBI is spelled F-B-I: 3 letters and 3 syllables. It appears 27 times per million words in written English, the 3,422nd most frequent word form (wordfreq, 2021 data). As a noun, FBI means “Fixed-bit index” (English Wiktionary, September 2026).
How many letters and syllables are in FBI?
| Letters | 3: F-B-I |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 27 times per million words; the 3,422nd most frequent word form |
| Wrong spellings searched | none 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 FBI?
FBI appears 27 times per million words in written English, the 3,422nd 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 FBI?
- /ˈɛf.biː.aɪ/
FBI has 3 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: LL-Q1860_(eng)-Persent101-FBI.wav, Wikimedia Commons (author and licence on each file's page).
What does FBI mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Fixed-bit index.
- 2
USFemale body inspector.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).