Etymologically

alienus

Etymology and origin of the Latin word alienus

Confidence
Established
Formation
Derivation
First attested
Twelve Tables
Ultimate origin
Latin (alius)
Etymology tree
inherited borrowed derived
Latin alienus
English alien

Pronunciation

  • IPA (Classical): [a.liˈeː.nʊs][1]
  • IPA (Ecclesiastical): [a.liˈɛː.nus][1]

Forms

aliēnus (feminine aliēna, neuter aliēnum, comparative aliēnior, superlative aliēnissimus); first/second-declension adjective[1]

Etymology

It is from alius “other” with the suffix -ēnus.[2][1][3] ⟨Alius⟩ goes back to Proto-Indo-European *h₂el- (“other, beyond”).[3]

Earliest recorded meaning

The OLD's first citation is the Twelve Tables, of what belongs to another, and Köbler dates them about 450 BC.[2][4]

Semantic evolution

It meant belonging to another, not one's own, as Cicero's men who tilled their own fields and did not covet others', of another's spouse, and aes aliēnum “debt”.[2][5] It meant unusual, unconnected, foreign, as in Plautus, unrelated by blood, and unfamiliar, strange.[2] Of persons and feelings it meant unfriendly, estranged, averse, as in Cicero, and of things unsuitable, incompatible, irrelevant, or harmful, of places and times unfavourable.[2] In Sallust it meant mentally disturbed.[2] As a noun it meant another's slave, a foreigner, an outsider.[2]

In Medieval Latin it meant deprived of something, and alien, a foreigner.[6][7] It survives in Spanish ajeno and Portuguese alheio.[1] English alien came through Old French about 1300.[3]

Timeline

  • c. 450 BC – The Twelve Tables use it of another's property.[2][4]
  • c. 250–184 BC – Plautus uses it of foreign and strange things.[2][4]
  • 81–43 BC – Cicero uses it of others' fields and of unfriendly feelings.[2][5][4]
  • c. 1300 – English alien is recorded.[3]

Meanings

Adjective

  1. Belonging to another, aes aliēnum, debt.[2]
  2. Unusual; unconnected.[2]
  3. Foreign; unrelated; strange.[2]
  4. Unfriendly, estranged; averse.[2]
  5. Unsuitable, incompatible; irrelevant.[2]
  6. Unfavourable, harmful.[2]
  7. Mentally disturbed.[2]

Noun

  1. A foreigner, alien; an outsider.[2]

Word family

  • aliēnigenus
  • aliēniloquium
  • alienitas
  • alienum

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  6. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  7. ^ 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

Borrowed into

Cite this entry

“Alienus.” Etymologically, 16 Oct. 2026, etymologically.com/la/alienus. Accessed 16 Oct. 2026.

Last edited on . ·