Polack
The noun Polack (/ˈpoʊlɑːk/ or /-læk/); in the contemporary English language, is a derogatory reference to a person of Polish descent. It is an Anglicisation of the Polish language word Polak, which means a Polish male or a person of Polish nationality (feminine being Polka), with a neutral connotation. However, the English loanword "Polack" (note the spelling difference which does not appear in Polish - there is no "ck" combination in the Polish language) is considered an ethnic slur in the United States and the United Kingdom, and therefore is considered insulting in nearly all modern usages.