Adjective alien has 2 senses
  1. alien, foreign - not contained in or deriving from the essential nature of something; "an economic theory alien to the spirit of capitalism"; "the mysticism so foreign to the French mind and temper"; "jealousy is foreign to her nature"
    Antonyms: intrinsic, intrinsical (indirect, via extrinsic)
  2. alien, exotic - being or from or characteristic of another place or part of the world; "alien customs"; "exotic plants in a greenhouse"; "exotic cuisine"
    Antonym: native (indirect, via foreign)
,Noun alien has 3 senses
  1. foreigner, alien, noncitizen, outlander - a person who comes from a foreign country; someone who does not owe allegiance to your country
    --1 is a kind of traveler, traveller
    --1 has particulars:
     au pair; exile, deportee; gringo; import, importee; metic
  2. stranger, alien, unknown - anyone who does not belong in the environment in which they are found
    --2 is a kind of intruder, interloper, trespasser
    --2 has particulars: foreigner, outsider
  3. extraterrestrial being, extraterrestrial, alien - a form of life assumed to exist outside the Earth or its atmosphere
    --3 is a kind of hypothetical creature
,Verb alien has 2 senses
  1. alien, alienate - transfer property or ownership; "The will aliened the property to the heirs"
    --1 is one way to transfer
    Sample sentence:
    Somebody ----s something
  2. estrange, alienate, alien, disaffect - arouse hostility or indifference in where there had formerly been love, affection, or friendliness
    --2 is one way to change, alter, modify
    Sample sentences:
    Somebody ----s somebody
    Something ----s somebody