Standard Lemma guide

ef

adj · conj · name · noun · 8 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈɛf/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -ɛf

1

adj

Meaning 1

Initialism of extremely fine or extra fine; also XF.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: hobbies, lifestyle, philately

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

conj

Meaning 2

Pronunciation spelling of if, representing dialectal English.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, nonstandard, pronunciation-spelling

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

name

Meaning 3

Initialism of Entity Framework, an open-source ORM framework.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

name

Meaning 4

Followed by a number from 0 to 5: initialism of Enhanced Fujita, a rating on the Enhanced Fujita scale used to indicate the intensity of a tornado; it has superseded the Fujita scale.

Definition source: English Wiktionary via Wiktextract

Usage: Canada, US

Topics: climatology, meteorology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

name

Meaning 5

Initialism of Extraordinary Form.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: Catholicism, Christianity, Roman-Catholicism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

The name of the Latin script letter F/f.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Initialism of ejection fraction.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: cardiology, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

Initialism of electric field.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: business, electrical-engineering, electricity, electromagnetism, energy, engineering, natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

33 source translations are retained for this English entry.

  • Arabic: إِف (ʔef) — name of the letter F, f
  • Asturian: efe — name of the letter F, f
  • Bengali: এফ (eph) — name of the letter F, f
  • Bulgarian: еф (ef) — name of the letter F, f
  • Catalan: efa — name of the letter F, f
  • Esperanto: fo — name of the letter F, f
  • Finnish: äf — name of the letter F, f
  • Finnish: äffä — name of the letter F, f
  • French: effe — name of the letter F, f
  • Galician: efe — name of the letter F, f
  • Greek: εφ (ef) — name of the letter F, f
  • Hindi: एफ़ (ef) — name of the letter F, f
  • Hindi: एफ (eph) — name of the letter F, f
  • Ido: fe — name of the letter F, f
  • Irish: eif — name of the letter F, f
  • Irish: fern — name of the letter F, f
  • Italian: effe — name of the letter F, f
  • Japanese: エフ (efu) — name of the letter F, f
  • Khmer: អេហ្វ (ʼeefɑɑ) — name of the letter F, f
  • Korean: 에프 (epeu) — name of the letter F, f
  • Latin: ef — name of the letter F, f
  • Malay: ef — name of the letter F, f
  • Marathi: एफ (eph) — name of the letter F, f
  • Occitan: èfa — name of the letter F, f
  • Persian: اف (ef) — name of the letter F, f
  • Polish: ef — name of the letter F, f
  • Portuguese: efe — name of the letter F, f
  • Russian: эф (ef) — name of the letter F, f
  • Spanish: efe — name of the letter F, f
  • Thai: เอฟ (ef) — name of the letter F, f
  • Turkish: fe — name of the letter F, f
  • Welsh: èf — name of the letter F, f
  • Welsh: èff — name of the letter F, f