non-refoulement

noun

non-re·​foule·​ment ˌnän-rə-ˌfül-ˈmän 

: a principle of international law providing a refugee or asylum seeker with the right to freedom from expulsion from a territory in which they seek refuge or from forcible return to a country or territory where the refugee or asylum seeker faces threats to life or freedom because of race, religion, nationality, membership in a particular social group, or political opinion

Word History

First Known Use

1960, in the meaning defined above