Akademik

Kafir
n. a native of the Hindu Kush mountains of NE Afghanistan.
Etymology: formed as KAFFIR

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kafir 7 [ˈkæfɪə(r)] [ˈkæfər] noun
a word used by Muslims to refer to a person who is not a Muslim, that can be considered offensive
 
Word Origin:
[kafir] from Arabic kāfir infidel, unbeliever. Compare with Kaffir.

Useful english dictionary. 2012.