alien
     adj 1: 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"
            [syn: {foreign}]
     2: being or from or characteristic of another place or part of
        the world; "alien customs"; "exotic plants in a
        greenhouse"; "exotic cuisine" [syn: {exotic}]
     n 1: a person who comes from a foreign country; someone who does
          not owe allegiance to your country [syn: {foreigner}, {noncitizen},
           {outlander}] [ant: {citizen}]
     2: anyone who does not belong in the environment in which they
        are found [syn: {stranger}, {unknown}]
     3: a form of life assumed to exist outside the Earth or its
        atmosphere [syn: {extraterrestrial being}, {extraterrestrial}]
     v 1: transfer property or ownership; "The will aliened the
          property to the heirs" [syn: {alienate}]
     2: arouse hostility or indifference in where there had formerly
        been love, affection, or friendliness [syn: {estrange}, {alienate},
         {disaffect}]
Source: WordNet® 2.0