1alien 
/ˈeɪlijən/ adjective
/ˈeɪlijən/ adjective 1 [more alien; most alien] : not familiar or like other things you have known : different from what you are used to
▪ She felt lost in an alien [=strange] culture when she moved to the city. ▪ an alien environment ▪ Honesty seems to be an alien concept in that family. [=people in that family are not honest] — often + to ▪ The whole idea of having a job was alien [=unfamiliar, foreign] to him. 2 : from another country : foreign
▪ alien residents 3 [more alien; most alien] : too different from something to be acceptable or suitable — + to ▪ Such behavior is totally alien to the spirit of the religion. ▪ ideas alien to [=incompatible with] democracy 4 : from somewhere other than the planet Earth
▪ an alien spaceship ▪ The movie is a story about an attack on Earth by an army of alien [=extraterrestrial] monsters.
▪ She felt lost in an alien [=strange] culture when she moved to the city. ▪ an alien environment ▪ Honesty seems to be an alien concept in that family. [=people in that family are not honest] — often + to ▪ The whole idea of having a job was alien [=unfamiliar, foreign] to him.
▪ alien residents
▪ an alien spaceship ▪ The movie is a story about an attack on Earth by an army of alien [=extraterrestrial] monsters.
