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alien

adjective
 
 
/ˈeɪ.li.ən/

Definition

coming from a different country, race, or group: an alien culture → Synonym foreignRacial issuesRace and ethnicity strange and not familiar: When I first went to New York, it all felt very alien to me.Unknown and unfamiliar [before noun] relating to creatures from another planet: an alien spacecraftStrange, suspicious and unnatural things and people
(Definition of alien adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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