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Old English bær (cognate)
←
Old Church Slavonic босъ (cognate)
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Ancient Greek ψιλός (cognate)
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Upper Sorbian bosy (cognate)
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Proto-Balto-Slavic *basas (inherited)
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Proto-Indo-European *bʰosós (inherited)
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Lithuanian bãsas (cognate)
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Russian босой (cognate)
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Proto-Slavic *bosъ (inherited)
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Old Armenian բոկ (cognate)