Etymograph

English

longevity

Longevity comes from Latin longaevitās ‘long life, longevity’, from longaevus ‘ancient, aged’, and ultimately from Proto-Indo-European *h₂ey- ‘vital force, life, age, eternity’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ey-1‘vital force, life, age, eternity’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂óyu1‘long time, lifetime’reconstructed
  3. Proto-Indo-Europeanc. 4500–2500 BCE*h₂oywom1reconstructed
  4. Proto-Italicc. 1500–700 BCE*aiwom1‘age’reconstructed
  5. Latinc. 75 BCE–200 CEaevum1‘time, eternity’
  6. Latinc. 75 BCE–200 CElongaevus2‘ancient, aged’
  7. Latinc. 75 BCE–200 CElongaevitās2‘long life, longevity’
  8. Englishearliest quotation 2018longevity2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin longaevus
  2. 2 Wiktionary, English longevity
  3. Earliest quotation in Wiktionary’s entry: 2018, James Lambert, Anglo-Indian slang in dictionaries on historical principles: “A ‘postdating’ is an example of the use of…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ey-Wiktionary, Latin longaevus‘vital force, life, age, eternity’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂óyuWiktionary, Latin longaevus‘long time, lifetime’reconstructed
  3. Proto-Indo-Europeanc. 4500–2500 BCE*h₂oywomWiktionary, Latin longaevusreconstructed
  4. Proto-Italicc. 1500–700 BCE*aiwomWiktionary, Latin longaevus‘age’reconstructed
  5. Latinc. 75 BCE–200 CEaevumWiktionary, Latin longaevus‘time, eternity’
  6. Latinc. 75 BCE–200 CElongaevusWiktionary, English longevity‘ancient, aged’
  7. Latinc. 75 BCE–200 CElongaevitāsWiktionary, English longevity‘long life, longevity’
  8. Englishearliest quotation 2018longevityWiktionary, English longevity. Earliest quotation in Wiktionary’s entry: 2018, James Lambert, Anglo-Indian slang in dictionaries on historical principles: “A ‘postdating’ is an example of the use of…”

The story

Early 17th century, learned borrowing from Latin longaevitās, from longaevus (‘ancient, aged’) + -itās. The first part is related to English long and this association led to the alternative pronunciation with /ŋ/.

Full etymology on Wiktionary

Linked words

through Proto-Indo-European *h₂ey- ‘vital force, life, age, eternity’

early, young, era, diet, enigma, ere, 23 more

through Proto-Indo-European *h₂óyu ‘long time, lifetime’

yet, junior, juvenile, juvenal, 7 more

through Proto-Italic *aiwom ‘age’

age, eternally, 9 more

through Latin aevum ‘time, eternity’

eternal, eternity, eval, 7 more

Today it means

noun The quality of being long-lasting, especially of life.

Sources

Sources: Wiktionary, “longevity”; the older steps come from the Wiktionary entry for Latin longaevus. 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 *h₂ey- / longevity

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