Etymograph

English

clef

Clef comes from Middle French clef ‘key’, from Proto-Italic *klāwis ‘bolt, lock, bar’, and ultimately from Proto-Indo-European *kleh₂u- ‘nail, pin, hook - instruments, of old use for…’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kleh₂u-1‘nail, pin, hook - instruments, of old use for locking doors’reconstructed
  2. Proto-Italicc. 1500–700 BCE*klāwis1‘bolt, lock, bar’reconstructed
  3. Latinc. 75 BCE–200 CEclāvis2‘a key’
  4. Middle Frenchc. 1400–1600clef2‘key’
  5. Englishtodayclef2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin clavis
  2. 2 Wiktionary, English clef

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kleh₂u-Wiktionary, Latin clavis‘nail, pin, hook - instruments, of old use for locking doors’reconstructed
  2. Proto-Italicc. 1500–700 BCE*klāwisWiktionary, Latin clavis‘bolt, lock, bar’reconstructed
  3. Latinc. 75 BCE–200 CEclāvisWiktionary, English clef‘a key’
  4. Middle Frenchc. 1400–1600clefWiktionary, English clef‘key’
  5. EnglishtodayclefWiktionary, English clef

Linked words

through Proto-Indo-European *kleh₂u- ‘nail, pin, hook - instruments, of old use for…’

conclusion, enclosure, 9 more

through Latin clāvis ‘a key’

enclave, conclave, clavicle, clave, subclavian, 7 more

Today it means

noun A symbol found on a musical staff that indicates the pitches represented by the lines and the spaces on the staff

Sources

Sources: Wiktionary, “clef”; the older steps come from the Wiktionary entry for Latin clavis. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *kleh₂u- / clef

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