Definition of Untermensch in English:
 Untermensch
nounPlural Untermenschenˈʊntɐmɛnʃˈʊntəmɛn(t)ʃˈo͝on(t)ərˌmen(t)SH
A person considered racially or socially inferior.
 Example sentencesExamples
-  He knew it to be a gamble, and it is significant that the ‘final Solution’, the systematic extermination of the Untermenschen, was not implemented until he had made this highest-of-stakes throw of the dice.
 -  The Germans still regard Italians as Untermenschen, fit to run a neighborhood pizzeria, but not to have an equal say in the future of Europe.
 -  They saw the extermination of Jews and other Untermenschen as an awful, but necessary, task on the road to a better world.
 -  The camp provided the Germans tautological proof of the necessity of imprisoning Untermenschen: the disgusting state of the Haftlinge of Auschwitz demonstrated their inferiority and justified their murder.
 -  Her specialty was forging identification cards to assist in smuggling Jews and other Untermenschen out of the Netherlands.
 
Origin
  
German, literally 'underperson'.