*SET-U

English word origin

Etymology of alien

From Middle English alien, a borrowing from Old French alien, aliene, from Latin aliēnus (“belonging to someone else”, later “exotic, foreign”), from Latin alius (“other”), from Proto-Indo-European *h₂élyos. Related to E

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology · variant 1/2

Original entry ↗
noun

A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration. · A citizen or national of another sovereign state. · A mischievous or suspicious foreigner. · Any life form of extraterrestrial or extradimensional origin.

Selected source glosses provide context, not a complete modern definition inventory

From Middle English alien, a borrowing from Old French alien, aliene, from Latin aliēnus (“belonging to someone else”, later “exotic, foreign”), from Latin alius (“other”), from Proto-Indo-European *h₂élyos. Related to English else.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

  • Root classification mention*h₂el- (other)ine-pro
  • Inherited-form mentionalienenm
  • Derivation mentionalienfro
  • Derivation mentionaliēnusla · belonging to someone else”, later “exotic, foreign
  • Derivation mentionaliusla · other
  • Derivation mention*h₂élyosine-pro
  • Cognate mentionelseen

This page abbreviates 1 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*h₂el- (other)"
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    },
    {
      "name": "inh",
      "args": {
        "1": "en",
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      "expansion": "Middle English alien"
    },
    {
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      "expansion": "Old French alien"
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      },
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    },
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    },
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      "name": "cog",
      "args": {
        "1": "en",
        "2": "else"
      },
      "expansion": "English else"
    }
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      "alien#Old_French"
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      "aliene#Old_French"
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  "references": [],
  "descendants": [
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "word": "エイリアン",
      "raw_tags": [
        "borrowed"
      ]
    }
  ],
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      "pos": "noun",
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        "A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.",
        "A citizen or national of another sovereign state.",
        "A mischievous or suspicious foreigner.",
        "Any life form of extraterrestrial or extradimensional origin."
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Unnumbered source etymology · variant 2/2

Original entry ↗
adj

Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign. · Very unfamiliar, strange, or removed. · Pertaining to extraterrestrial life; typical of an extraterrestrial creature.

verb

To estrange; to alienate. · To transfer the ownership of something.

Selected source glosses provide context, not a complete modern definition inventory

From Middle English alien, a borrowing from Old French alien, aliene, from Latin aliēnus (“belonging to someone else”, later “exotic, foreign”), from Latin alius (“other”), from Proto-Indo-European *h₂élyos. Related to English else.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

  • Root classification mention*h₂el- (other)ine-pro
  • Inherited-form mentionalienenm
  • Derivation mentionalienfro
  • Derivation mentionaliēnusla · belonging to someone else”, later “exotic, foreign
  • Derivation mentionaliusla · other
  • Derivation mention*h₂élyosine-pro
  • Cognate mentionelseen
Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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      "name": "root",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*h₂el- (other)"
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      "expansion": ""
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "alien"
      },
      "expansion": "Middle English alien"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "alien"
      },
      "expansion": "Old French alien"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "aliēnus",
        "t": "belonging to someone else”, later “exotic, foreign"
      },
      "expansion": "Latin aliēnus (“belonging to someone else”, later “exotic, foreign”)"
    },
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      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "alius",
        "t": "other"
      },
      "expansion": "Latin alius (“other”)"
    },
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      "args": {
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      },
      "expansion": "English else"
    }
  ],
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      "alien",
      "alien#Middle_English"
    ],
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      "alien",
      "alien#Old_French"
    ],
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      "aliene",
      "aliene#Old_French"
    ],
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      "aliēnus",
      "alienus#Latin"
    ],
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      "alius",
      "alius#Latin"
    ],
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      "*h₂élyos",
      "Reconstruction:Proto-Indo-European/h₂élyos"
    ],
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      "else",
      "else#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.",
        "Very unfamiliar, strange, or removed.",
        "Pertaining to extraterrestrial life; typical of an extraterrestrial creature."
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Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for alien →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-YWxpZW4