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

南蛮[nanban] southern barbarians (formerly used by the Chinese to refer to non-ethnic Chinese to the south)
南蛮人[nanbanjin] southern barbarian (used to describe Western Europeans who visited Japan prior to the Edo period, esp. the Spanish and the Portuguese)
南蛮船[nanbansen] foreign ship (esp. of Spanish and Portuguese ships arriving from the south prior to the Edo period)
蛮境[bankyou] land of the barbarians
蛮カラ[bankara] scruffy

蛮語[bango] language of the barbarians
蛮行[bankou] act of barbarity
蛮骨[bankotsu] brute courage
蛮習[banshuu] barbarous custom
蛮声[bansei] rough voice