foreigner

stranger, foreigner, alien, immigrant

这些名词均有“陌生人，外人”之意。
stranger: 指对当地的生活习惯、语言等不熟悉，或为某团体不熟的人，也指不认识的人。
foreigner: 指在异国作短期访问或长期居住的外国人。
alien: 指没有成为侨居国正式公民的移民。
immigrant: 指在别国定居并取得所在国国籍的外国人。

名词 foreigner:

1. a person who comes from a foreign country; someone who does not owe allegiance to your country
   同义词：alien, noncitizen, outlander
2. someone who is excluded from or is not a member of a group
   同义词：outsider

形容词 foreign:

1. of concern to or concerning the affairs of other nations (other than your own)
   同义词：foreign
2. relating to or originating in or characteristic of another place or part of the world
   同义词：foreign, strange
3. not contained in or deriving from the essential nature of something
   同义词：alien, foreign
4. not belonging to that in which it is contained; introduced from an outside source
   同义词：extraneous, foreign

1. The foreigner came to China and attended the Fair.
   外国朋友来华参加交易会。
2. She wedded a foreigner.
   她嫁给了一个外国人。
3. His broken English showed he was a foreigner.
   他的蹩脚的英语说明他是一个外国人。
4. He never met a foreigner who spoke such perfect Chinese.
   他从未见过中国话讲得这样纯正的外国人。

for.eign.er

n.（名词）
One who is from a foreign country or place.
外国人，外来者：从其它国家或地区来的人
One who is from outside a particular group or community; an outsider.
外人，局外人：某一组织或团体之外的人；局外人