夷国[ikoku] land of the barbarians
夷人[ijin] barbarian
夷俗[izoku] customs of the barbarians
夷狄[iteki] barbarians

蝦夷[ezo] peoples formerly of northern Japan with distinct language and culture (i.e. the Ainu)
勤皇攘夷[kinnoujoui] loyalty to the emperor and expulsion of the foreigners
蕃夷[bani] savages
攘夷[joui] expulsion of the foreigners

夷狄[iteki] barbarians
夷蛮戎狄[ibanjuuteki] the barbarians beyond the borders of old China

北狄[hokuteki] northern barbarians (used by the Chinese to refer to non-ethnic Chinese to the north)