γραικύλος

Etymology
From, diminutive of. The term was used in an ironical manner during the Byzantine Empire, by Greeks, to denote non-Greeks living within the Empire and which were trying to behave as Greeks.

Noun

 * 1) a Greek which is unworthy of the national traditions
 * 2) the deposed or decadent Greek
 * 3) a Greek submitted to strangers, foreign interests