ef
/ˈɛf/noun
ef is spelled E-F: 2 letters. It appears 1.9 times per million words in written English, the 20,101st most frequent word form (wordfreq, 2021 data). As a noun, ef means “The name of the Latin script letter F/f” (English Wiktionary, September 2026). The plural of ef is efs.
How many letters and syllables are in ef?
| Letters | 2: E-F |
|---|---|
| In writing | 1.9 times per million words; the 20,101st most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is ef?
Ef appears 1.9 times per million words in written English, the 20,101st 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 ef?
- /ˈɛf/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-ef.wav, Wikimedia Commons (author and licence on each file's page).
Words people confuse with ef
Also written: eff.
Sources: English Wiktionary (homophones, alternative spellings).
Forms of ef
- efs plural
- eff
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does ef mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The name of the Latin script letter F/f.
noun
- 1
Initialism of ejection fraction.
- 2
Initialism of electric field.
adjective
- 1
Initialism of extremely fine or extra fine; also XF.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Ef in Spanish, French, German and Portuguese
In the sense name of the letter F, f:
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.