Etymologically

aetas

Etymology and origin of the Latin word aetas

Confidence
Established
Formation
Derivation
First attested
c. 450 BC (Twelve Tables)
Ultimate origin
Proto-Indo-European (*h₂eyu-)
Etymology tree
inherited borrowed derived
Latin aevum
Latin aetas

Pronunciation

  • IPA (Classical): [ˈae̯.taːs][1]
  • IPA (Ecclesiastical): [ˈɛː.tas][1]

Forms

aetās f (genitive aetātis); third declension[1]

Etymology

It is a contraction of aevitās, from Latin aevum (“age, lifetime”) + -tās.[2][3] Wiktionary traces it to Proto-Italic *aiwotāts, from *aiwom and the suffix *-tāts.[1] The full form aevitās survives in the Twelve Tables, Varro and Cicero's laws, and inscriptions spell it ⟨etas⟩.[2]

Earliest recorded meaning

The Twelve Tables have aevitās in the rule “if illness or old age is a hindrance”.[2] Köbler dates the Twelve Tables to about 450 BC.[4]

Semantic evolution

It was the number of years one has lived, one's age, and the age of things such as wine or words.[2] It also named a period of life (infancy, youth, old age), an age group, youth or old age in particular, and the whole of one's lifetime, aetātem meant “all one's life”.[2] By extension it was human life in general and a historical age or era.[2][1]

Isidore distinguished the age of a man, divided into infancy, youth and old age, from the ages of the world.[5] In medieval British Latin it was a person's age, childhood, old age and an age group.[6] It survives in Italian età, Spanish edad and Portuguese idade, and Old French aage gave English age.[1]

Timeline

  • c. 450 BC – The Twelve Tables use aevitās of old age.[2][4]
  • c. 250–184 BC – Plautus asks “how old do I seem to you?”.[2][4]
  • 81–43 BC – Cicero speaks of the turn of life.[2][4]
  • c. 560–636 AD – Isidore distinguishes the ages of man and of the world.[5][4]

Meanings

Noun

  1. One's age, years; full age; the age of things.[2]
  2. A period of life (infancy, youth, old age).[2]
  3. An age group.[2]
  4. Youth; old age.[2]
  5. A lifetime, aetātem, all one's life, for an age.[2]
  6. Human life.[2]
  7. An age, era; a generation.[1]

Word family

  • aetātula
  • aeternus

Usage notes

Isidore notes that aetās could mean one year in annals, seven years of a man's life, a hundred years, or longer spans.[5]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c Isidore of Seville, Etymologiarum sive Originum libri XX, ed. W. M. Lindsay (Oxford, 1911).
  6. ^ Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
Cite this entry

“Aetas.” Etymologically, 16 Oct. 2026, etymologically.com/la/aetas. Accessed 16 Oct. 2026.

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