alien
US /ˈeɪ.li.ən/
UK /ˈeɪ.li.ən/
1.
a foreigner, especially one who is not a naturalized citizen of the country where they are living
:
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The government has strict laws regarding alien residents.
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He felt like an alien in his new school.
2.
a hypothetical or fictional being from another world; an extraterrestrial
:
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The movie featured a friendly alien.
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Scientists are searching for signs of alien life.
1.
unfamiliar and disturbing or distasteful
:
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The concept of absolute freedom was alien to him.
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His behavior was completely alien to his usual character.
2.
belonging to a foreign country or nation
:
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The company deals with alien currencies.
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They discussed the impact of alien cultures on local traditions.