alien

A1L1I1E1N1
/ˈeɪ.li.ən//ˈeɪ.ljən/

noun

A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.

CommonScrabble 5

Meanings

alien1

nounalien (plural aliens)

plural aliens · alternative alyaunte

  1. A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.

    An animated film intended to inform travellers about the dangers that alien species present to Arctic ecosystems is being released today. The message is that it is important to ensure that nobody accidentally brings alien species with them as stowaways in their clothing, baggage or equipment.

    2023 March 21 (last accessed), NOBANIS: European Network on Invasive Species

    Synonyms: fremd, guest, stranger

  2. A citizen or national of another sovereign state.

    I'm an alien, I'm a legal alien I'm an Englishman in New York

    1987, “Englishman in New York”, in …Nothing Like the Sun, performed by Sting
    3 more examples

    An alien born may purchase lands, or other estates: but not for his own use; for the king is thereupon entitled to them.

    1773, William Blackstone, Commentaries on the laws of England: in four books, 5th edition, volume 1, page 372

    The counsel have shown conclusively that they are not a state of the union, and have insisted that individually they are aliens, not owing allegiance to the United States.

    1831, John Marshall, Cherokee Nation v. Georgia, U.S. Government

    Aliens are aliens because of persecution or war or hardship or famine.

    2004, Wesley Campbell, Stephen Court, Be a hero: the battle for mercy and social justice, Destiny Image Publishers, page 74
  3. derogatorysometimesA mischievous or suspicious foreigner.
  4. Any life form of extraterrestrial or extradimensional origin.
    1 more example

    You might not have much use for me. You spend too much time with the damn aliens, pretending your time in the gangs back on Earth never happened. I know you weren't happy when I found you at the Citadel a couple years back. But I'm glad you're on this. I hope you find whoever took my people on Freedom's Progress and kick their scaly asses. I'm glad it's a human finding these bastards.

    2010, BioWare, Mass Effect 2, Redwood City: Electronic Arts, →OCLC, PC, scene: Hello from the Reds
  5. One excluded from certain privileges; one alienated or estranged.

    […]aliens from the common wealth of Iſrael[…]

    1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], →OCLC, Ephesians 2:12, column 2
    1 more example

    The One Who, in this marvellous utterance, brings those who were by nature aliens and enemies of God into intimate and holy relations with God the Father, is the very One Who had to come to offer that Sacrifice without which such relationship would have been forever an impossibility; without which there would have been nothing for the best of men but death and judgment and the lake of fire.

    1928, Philip Mauro, “The Character of the Sermon on the Mount”, in The Gospel of the Kingdom, with an Examination of Modern Dispensationalism (Religion), Boston: Hamilton Brothers, →OCLC, page 182
adjectivealien (comparative more alien, superlative most alien)

comparative more alien · superlative most alien · alternative alyaunte

  1. Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.

    alien subjects, enemies, property, or shores

    Synonyms: allotrious, strange, acquired, additional, adventitious, ascititious, extraneous, foreign

  2. Very unfamiliar, strange, or removed.

    principles alien to our religion

    1 more example

    An alien sound of melancholy.

    1850, William Wordsworth, The Prelude

    Synonyms: monstrous, weird, aberrant, abnormal, anomalous, as queer as Dick's hatband, bizarre, booky

  3. Pertaining to extraterrestrial life; typical of an extraterrestrial creature.

    It had a peculiar alien tallness, a peculiar alien flattened head, peculiar slitty little alien eyes[.]

    1982, Douglas Adams, Life, the Universe and Everything, page 8

    Synonyms: extraterrestrial, nonterrestrial, xenomorphic

verbalien (third-person singular simple present aliens, present participle aliening, simple past and past participle aliened)

present singular third person aliens · participle present aliening · participle past aliened · past aliened · alternative aliene · alternative alyaunte

  1. transitiveTo estrange; to alienate.
  2. lawTo transfer the ownership of something.

Alien2

proper noun
  1. alternativeAlternative form of Alian.

    Premier Chiang Ching-kuo traveled to Alien village in Kaohsiung county May 23 to inspect the Chung-chou No. 3 oilwell prospect of Chinese Petroleum Corporation.

    1977, 光華畫報, volume 2, numbers 2-12, →OCLC, page 25
    2 more examples

    A woman holds up two bowls containing eggs at a press conference in Taipei yesterday. The left contains a regular egg, while the other bowl is an SGS-certified egg from Taiwan’s first company to use humanely raised egg-laying hens from Europe, the Shih An Farm in Greater Kaohsiung’s Alien District.

    2012 July 5, Lee I-chia, “COA fights for hens’ rights”, in Taipei Times, →ISSN, →OCLC, archived from the original on 06 Jul 2012, Taiwan News, page 3

    Res Matilin comes from Sandi Village, a Paiwan community in Pingtung County. Jimmy comes from Alien Township, Kaohsiung City and has Minnan ethnicity. “I decided to come back because I really missed home. I had been away from home for too long.”

    原視

    2019 October 22, Liang Wen-Ching, “Take Pre-wedding Photo Shoot Back Home”, in Phoebe Szu-Yu Huang [黃思瑜], transl., Indigenous Sight [原視], archived from the original on 26 Nov 2023

Synonyms & antonyms

nounA person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration.

adjectiveNot belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign.

adjectivePertaining to extraterrestrial life; typical of an extraterrestrial creature.

foreigner

Similar

More synonyms by meaning

adjectivenot contained in or deriving from the essential nature of something

adjectivebeing or from or characteristic of another place or part of the world

nouna person who comes from a foreign country; someone who does not owe allegiance to your country

nounanyone who does not belong in the environment in which they are found

nouna form of life assumed to exist outside the Earth or its atmosphere

Similar
extraterrestrial beingextraterrestrial
Broader
hypothetical creature

verbtransfer property or ownership

Similar
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

alien · noun, adjective, verb

  1. Proto-Indo-European*h₂élyos
  2. Latinalius“other”
  3. Latinaliēnus“belonging to someone else”, later “exotic, foreign”
  4. Old Frenchalien
  5. Middle Englishalien
  6. Englishalien

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.

Full word history & related roots →

Alien · proper noun

  1. Mandarin阿蓮
  2. EnglishAlien

Borrowed from Mandarin 阿蓮 (Ālián) Wade–Giles romanization: A¹-lien².

Full word history & related roots →

Translations

Ancient Greek ξένος, ἀλλότριος
  • ξένος (xénos)not belonging to the same country
  • ἀλλότριος (allótrios)not belonging to the same country
Arabic غَرِيب, غَرِيبَة
  • غَرِيب (ḡarīb)person, etc. from outside
  • غَرِيبَة (ḡarība)person, etc. from outside
  • أَجْنَبِيّ (ʔajnabiyy)foreigner
  • أَجْنَبِيَّة (ʔajnabiyya)foreigner
  • فَضَائِيّ m or فَضَائِيَّة (faḍāʔiyy)life form of non-Earth origin
Bulgarian чуждене́ц, чужденка́
  • чуждене́ц (čuždenéc)person, etc. from outside
  • чужденка́ (čuždenká)person, etc. from outside
  • чуждене́ц (čuždenéc)foreigner
  • чужденка́ (čuždenká)foreigner
  • извънзе́мен (izvănzémen)life form of non-Earth origin
  • извънзе́мна (izvănzémna)life form of non-Earth origin
  • чужд (čužd)not belonging to the same country
  • чуждестранен (čuždestranen)not belonging to the same country
Catalan estrany, estranya
  • estranyperson, etc. from outside
  • estranyaperson, etc. from outside
  • forasterperson, etc. from outside
  • forasteraperson, etc. from outside
  • forasterforeigner
  • forasteraforeigner
  • estranyforeigner
  • estranyaforeigner
  • extraterrestrelife form of non-Earth origin
  • alièvery unfamiliar, strange
  • aliévery unfamiliar, strange
  • alienígenapertaining to extraterrestrial life
  • extraterrestrepertaining to extraterrestrial life
Chinese Mandarin 異客 /异客, 陌生人
  • 異客 /异客 (yìkè)person, etc. from outside
  • 陌生人 (mòshēngrén)person, etc. from outside
  • 外國人 /外国人 (wàiguórén)foreigner
  • 外人 (wàirén)foreigner
  • 老外 (lǎowài)foreigner
  • 外星人 (wàixīngrén)life form of non-Earth origin
  • 宇宙人 (yǔzhòurén)life form of non-Earth origin
  • 外來的 /外来的 (wàilái de)not belonging to the same country
Czech cizinec, cizinec
  • cizinecperson, etc. from outside
  • cizinecforeigner
  • mimozemšťanlife form of non-Earth origin
  • mimozemšťankalife form of non-Earth origin
  • ufounlife form of non-Earth origin
Danish udlænding, rumvæsen
  • udlændingforeigner
  • rumvæsenlife form of non-Earth origin
  • alienlife form of non-Earth origin
  • udenlandsknot belonging to the same country
  • fremmedartetvery unfamiliar, strange
Dutch vreemdeling, vreemdelinge
  • vreemdelingperson, etc. from outside
  • vreemdelingeperson, etc. from outside
  • buitenlanderforeigner
  • allochtoonforeigner
  • vluchtelingforeigner
  • vluchtelingeforeigner
  • ruimtewezenlife form of non-Earth origin
  • alienlife form of non-Earth origin
  • buitenlandsnot belonging to the same country
  • allochtoonnot belonging to the same country
  • vreemdvery unfamiliar, strange
  • buitenaardspertaining to extraterrestrial life
Esperanto alilandano, fremdulo
  • alilandanoperson, etc. from outside
  • fremduloperson, etc. from outside
  • alilandanoforeigner
  • fremduloforeigner
  • aliplanedanolife form of non-Earth origin
  • eksterterulolife form of non-Earth origin
  • eksterteranolife form of non-Earth origin
  • fremdavery unfamiliar, strange
  • eksterterulapertaining to extraterrestrial life
Estonian muulane, tulnukas
  • muulaneperson, etc. from outside
  • tulnukasperson, etc. from outside
  • võõrasperson, etc. from outside
  • välismaalaneforeigner
  • võõramaalaneforeigner
  • muulaneforeigner
  • maaväline olendlife form of non-Earth origin
  • tulnukaslife form of non-Earth origin
  • välismainenot belonging to the same country
  • võõramainenot belonging to the same country
  • võõrasvery unfamiliar, strange
  • maavälinepertaining to extraterrestrial life
Finnish muukalainen, muukalainen
  • muukalainenperson, etc. from outside
  • muukalainenforeigner
  • ulkomaalainenforeigner
  • vierasmaalainenforeigner
  • avaruusolentolife form of non-Earth origin
  • alienlife form of non-Earth origin
  • vierasmaalainennot belonging to the same country
  • vierasvery unfamiliar, strange
  • avaruusolio-pertaining to extraterrestrial life
  • avaruusolento-pertaining to extraterrestrial life
  • muukalainenpertaining to extraterrestrial life
French étranger, étrangère
  • étrangerperson, etc. from outside
  • étrangèreperson, etc. from outside
  • étrangerforeigner
  • étrangèreforeigner
  • extraterrestrelife form of non-Earth origin
  • alienlife form of non-Earth origin
  • étrangernot belonging to the same country
  • extraterrestrepertaining to extraterrestrial life
German Fremdling, Fremder
  • Fremdlingperson, etc. from outside
  • Fremderperson, etc. from outside
  • Fremdeperson, etc. from outside
  • Ausländerperson, etc. from outside
  • Ausländerinperson, etc. from outside
  • Fremderforeigner
  • Fremdeforeigner
  • Ausländerforeigner
  • Ausländerinforeigner
  • Außerirdischerlife form of non-Earth origin
  • Außerirdischelife form of non-Earth origin
  • Alienlife form of non-Earth origin
  • ausländischnot belonging to the same country
  • fremdnot belonging to the same country
  • fremdländischnot belonging to the same country
  • auswärtignot belonging to the same country
  • fremdvery unfamiliar, strange
  • fremdartigvery unfamiliar, strange
  • außerirdischpertaining to extraterrestrial life
Greek ξένος, ξένος
  • ξένος (xénos)person, etc. from outside
  • ξένος (xénos)foreigner
  • εξωγήινος (exogíinos)life form of non-Earth origin
  • ξένος (xénos)not belonging to the same country
  • ξένος (xénos)very unfamiliar, strange
Hebrew זָר, גֵּר
  • זָר (zár)person, etc. from outside
  • גֵּר (ger)foreigner
  • חַיְזָר (khayzár)life form of non-Earth origin
  • חוּצָן (khutsán)life form of non-Earth origin
Hindi अनजाना, अनजानी
  • अनजाना (anjānā)person, etc. from outside
  • अनजानी (anjānī)person, etc. from outside
  • बाहरी (bāhrī)person, etc. from outside
  • विदेशी (videśī)person, etc. from outside
  • परदेसी (pardesī)person, etc. from outside
  • विदेशी (videśī)foreigner
  • अन्यदेशीय (anyadeśīya)foreigner
  • परदेसी (pardesī)foreigner
  • परग्रही (paragrahī)life form of non-Earth origin
  • विदेशी (videśī)not belonging to the same country
  • अपरिचित (apricit)very unfamiliar, strange
  • अनजान (anjān)very unfamiliar, strange
  • परग्रही (paragrahī)pertaining to extraterrestrial life
Hungarian idegen, idegen
  • idegenperson, etc. from outside
  • idegenforeigner
  • földönkívülilife form of non-Earth origin
  • űrlakólife form of non-Earth origin
  • űrlénylife form of non-Earth origin
Icelandic aðkomumaður, útlendingur
  • aðkomumaðurperson, etc. from outside
  • útlendingurforeigner
  • geimveralife form of non-Earth origin
Indonesian orang asing, makhluk luar
  • orang asingperson, etc. from outside
  • makhluk luarlife form of non-Earth origin
  • makhluk angkasalife form of non-Earth origin
  • makhluk asinglife form of non-Earth origin
  • asingnot belonging to the same country
  • pendatang baruvery unfamiliar, strange
Irish coimhthíoch, coimhthíoch
  • coimhthíochperson, etc. from outside
  • coimhthíochforeigner
  • eachtránlife form of non-Earth origin
  • coimhthíochnot belonging to the same country
  • coimhthíochvery unfamiliar, strange
Italian straniero, straniero
  • stranieroperson, etc. from outside
  • stranieroforeigner
  • forestieroforeigner
  • extraterrestrelife form of non-Earth origin
  • alienolife form of non-Earth origin
  • extraterrestrepertaining to extraterrestrial life
Japanese 余所者, 外国人
  • 余所者 (yosomono)person, etc. from outside
  • 外国人 (gaikokujin)foreigner
  • 外人 (gaijin)foreigner
  • 異邦人 (ihōjin)foreigner
  • 宇宙人 (uchūjin)life form of non-Earth origin
  • 異星人 (iseijin)life form of non-Earth origin
  • エイリアン (eirian)life form of non-Earth origin
  • 外来の (gairai no)not belonging to the same country
  • 外国の (gaikoku no)not belonging to the same country
  • 相容れない (aiirenai)very unfamiliar, strange
  • 異質な (ishitsu na)very unfamiliar, strange
Korean 외국인, 이국인
  • 외국인 (oegugin)person, etc. from outside
  • 이국인 (igugin)person, etc. from outside
  • 외국인 (oegugin)foreigner
  • 이국인 (igugin)foreigner
  • 우주인 (uju'in)life form of non-Earth origin
  • 외계인 (oegyein)life form of non-Earth origin
  • 에일리언 (eillieon)life form of non-Earth origin
Latin peregrīnus, aliēnus
  • peregrīnusperson, etc. from outside
  • aliēnusperson, etc. from outside
  • peregrīnusforeigner
  • aliēnusforeigner
  • aliēnusnot belonging to the same country
  • peregrīnusnot belonging to the same country
  • aliēnusvery unfamiliar, strange
Malay makhluk asing
  • makhluk asinglife form of non-Earth origin
Māori tarutawhiti, tautangata
  • tarutawhitiperson, etc. from outside
  • tautangataperson, etc. from outside
  • tarutawhitiforeigner
  • tautangataforeigner
  • tautangatanot belonging to the same country
Norwegian fremmed, utenomjordisk
  • fremmedvery unfamiliar, strange
  • utenomjordiskpertaining to extraterrestrial life
Norwegian Bokmål fremmed, romvesen
  • fremmedperson, etc. from outside
  • romvesenlife form of non-Earth origin
Persian بیگانه
  • بیگانه (bigane)life form of non-Earth origin
Polish obcy, cudzoziemiec
  • obcyperson, etc. from outside
  • cudzoziemiecforeigner
  • obcokrajowiecforeigner
  • obcylife form of non-Earth origin
  • kosmitalife form of non-Earth origin
  • istota pozaziemskalife form of non-Earth origin
  • ufoludeklife form of non-Earth origin
  • zielony ludziklife form of non-Earth origin
  • cudzoziemskinot belonging to the same country
Portuguese estranho, estrangeiro
  • estranhoperson, etc. from outside
  • estrangeiroforeigner
  • forasteiroforeigner
  • alienígenalife form of non-Earth origin
  • extraterrestrelife form of non-Earth origin
  • alienlife form of non-Earth origin
  • alienígenanot belonging to the same country
  • alheiovery unfamiliar, strange
  • alienígenapertaining to extraterrestrial life
  • extraterrestrepertaining to extraterrestrial life
Romanian străin, străină
  • străinperson, etc. from outside
  • străinăperson, etc. from outside
  • străinforeigner
  • străinăforeigner
  • extraterestrulife form of non-Earth origin
  • extraterestrălife form of non-Earth origin
  • străinnot belonging to the same country
  • nefamiliarvery unfamiliar, strange
  • extraterestrupertaining to extraterrestrial life
Russian чужа́к, прише́лец
  • чужа́к (čužák)person, etc. from outside
  • прише́лец (prišélec)person, etc. from outside
  • незнако́мец (neznakómec)person, etc. from outside
  • незнако́мка (neznakómka)person, etc. from outside
  • посторо́нний (postorónnij)person, etc. from outside
  • посторо́нняя (postorónnjaja)person, etc. from outside
  • иностра́нец (inostránec)foreigner
  • чужезе́мец (čužezémec)foreigner
  • иноро́дец (inoródec)foreigner
  • инопланетя́нин (inoplanetjánin)life form of non-Earth origin
  • инопланетя́нка (inoplanetjánka)life form of non-Earth origin
  • инопланетя́не (inoplanetjáne)life form of non-Earth origin
Scottish Gaelic coigreach, coimheach
  • coigreachperson, etc. from outside
  • coimheachperson, etc. from outside
  • coigreachforeigner
  • coimheachforeigner
  • Gallforeigner
  • coimheachvery unfamiliar, strange
Slovak mimozemšťan, mimozemšťanka
  • mimozemšťanlife form of non-Earth origin
  • mimozemšťankalife form of non-Earth origin
Spanish desconocido, desconocida
  • desconocidoperson, etc. from outside
  • desconocidaperson, etc. from outside
  • advenaperson, etc. from outside
  • forasteroperson, etc. from outside
  • extranjeroforeigner
  • extranjeraforeigner
  • extraterrestrelife form of non-Earth origin
  • alienígenalife form of non-Earth origin
  • alienígenanot belonging to the same country
  • ajenovery unfamiliar, strange
  • alienígenovery unfamiliar, strange
  • alienígenapertaining to extraterrestrial life
  • extraterrestrepertaining to extraterrestrial life
Swedish främling, utlänning
  • främlingperson, etc. from outside
  • utlänningforeigner
  • utomjordinglife form of non-Earth origin
  • utomjordlinglife form of non-Earth origin
  • rymdvarelselife form of non-Earth origin
  • främmandenot belonging to the same country
  • främmandevery unfamiliar, strange
  • utomjordiskpertaining to extraterrestrial life
Thai ฝรั่ง, มนุษย์ต่างดาว
  • ฝรั่ง (fà-ràng)foreigner
  • มนุษย์ต่างดาว (má-nút-dtàang-daao)life form of non-Earth origin
  • ต่างประเทศ (dtàang-bprà-têet)not belonging to the same country
  • ต่างด้าว (dtàang-dâao)not belonging to the same country
Turkish yabancı, yabancı
  • yabancıperson, etc. from outside
  • yabancıforeigner
  • ecnebiforeigner
  • gavurforeigner
  • elforeigner
  • uzaylılife form of non-Earth origin
Ukrainian чужи́нець, чужи́й
  • чужи́нець (čužýnecʹ)person, etc. from outside
  • чужи́й (čužýj)person, etc. from outside
  • прибу́лець (prybúlecʹ)person, etc. from outside
  • інозе́мець (inozémecʹ)foreigner
  • чужозе́мець (čužozémecʹ)foreigner
  • іншопланетя́нин (inšoplanetjányn)life form of non-Earth origin
  • іншопланетя́нка (inšoplanetjánka)life form of non-Earth origin
  • чужопланетя́нин (čužoplanetjányn)life form of non-Earth origin
  • чужопланетя́нка (čužoplanetjánka)life form of non-Earth origin
  • інопланетя́нин (inoplanetjányn)life form of non-Earth origin
  • інопланетя́нка (inoplanetjánka)life form of non-Earth origin
  • інозе́мний (inozémnyj)not belonging to the same country
  • чужозе́мний (čužozémnyj)not belonging to the same country
  • чужи́й (čužýj)very unfamiliar, strange
  • інопланетний (inoplanetnyj)pertaining to extraterrestrial life
  • позаземний (pozazemnyj)pertaining to extraterrestrial life
Urdu اجنبی, اَجْنَبی
  • اجنبی (ajnabī)person, etc. from outside
  • اَجْنَبی (ajnabī)foreigner
  • پَرْدیسی (pardesī)foreigner
  • بیگانَہ (begāna)foreigner
Vietnamese người nước ngoài, người ngoại quốc
  • người nước ngoàiforeigner
  • người ngoại quốcforeigner
  • người ngoài hành tinhlife form of non-Earth origin

Rhymes & wordplay

Rhymes with alien

All rhymes →

Anagrams

Cite this entry
APA

alien. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/alien

MLA

“alien.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/alien. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “alien,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/alien.

Source: alien on Wiktionary, CC BY-SA 4.0.