alien.
A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.
Meaning & usage
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.
One excluded from certain privileges; one alienated or estranged.
Where this word comes from
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.
Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.
alien subjects, enemies, property, or shores
Very unfamiliar, strange, or removed.
principles alien to our religion
Pertaining to extraterrestrial life; typical of an extraterrestrial creature.
Where this word comes from
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.
To estrange; to alienate.
To transfer the ownership of something.
Where this word comes from
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.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.